Signal No. 68 · 'Decision-making centres'; US force-generation cut; German–Netherlands Corps to the Baltics

On the evening of 25 May, Russian Foreign Minister Sergei Lavrov telephoned US Secretary of State Marco Rubio and informed him, in language released verbatim by the Russian Foreign Ministry, that Moscow would commence strikes on "decision-making centres" in Kyiv and urged Washington to "ensure the evacuation of [its] diplomatic personnel." The readout extended the same notice to foreign citizens generally and named "the military and administrative infrastructure of the Zelensky regime" as the target set. Hours later, the second wave of mass aerial strikes against Kyiv in 48 hours began. The first wave — covered in Signal No. 67 — used the third operational Oreshnik launch of the war against Bila Tserkva alongside 600 strike drones and 90 missiles on the night of 23-24 May. The second wave, on 24-25 May, deployed 69 missiles (45 cruise missiles confirmed shot down) and 298 drones (266 neutralised); 22 sites were directly hit. Twelve civilians were killed, including three children, and 79 injured across thirteen oblasts.

Until 25 May, "decision-making centres" was a formulation reserved for state television and Medvedev's Telegram. The 25 May readout places the language in a state-to-state channel, delivered to the principal interlocutor in active ceasefire mediation, for the first time. The diplomatic quarter had already been struck in the previous wave. Prague's BIS warning of last week that Russian targeting cells were preparing operations against the Baltic states with indicators identical to the pre-2022 Ukrainian sequence sits alongside the Lavrov readout as a separate geographic concern.

The European diplomatic response converged within twenty-four hours. On 26 May the European External Action Service summoned the Russian chargé d'affaires in Brussels; Commission spokesperson Anitta Hipper called the Russian demand that foreigners and diplomats leave Kyiv "an unacceptable escalation" and confirmed the EU delegation would remain. The Auswärtiges Amt summoned the Russian chargé in Berlin the same day, formally protesting "targeted attacks on diplomatic missions" as a "serious violation of international humanitarian law." Norwegian Foreign Minister Espen Barth Eide separately summoned Ambassador Nikolai Korchunov over "the explicit threats against foreign personnel in Ukraine." Sweden had summoned the Russian ambassador the previous evening over false Russian airspace-violation claims and threats against Latvia and the Nordic-Baltic region. The Netherlands joined the same step on 26 May. The EU delegation, like the diplomatic missions in scope, stayed. At the United Nations Security Council later on 26 May, Secretary-General António Guterres said he was "deeply concerned" by Russia's announcement of strikes on "Ukrainian defense enterprises and decision-making centers" and called for de-escalation; he separately condemned a Ukrainian drone strike on a college building and dormitory in Russian-controlled Starobilsk reported the same day.

Signal: Russia delivered the threat through Rubio — the active US mediator for both Russia-Ukraine and US-Iran tracks — rather than via state media or Medvedev's Telegram. The European response was unusually coordinated: five capitals plus the EU summoned Russian envoys within 24 hours. The verbatim "ensure the evacuation of [its] diplomatic personnel" implies expected impact zones extending to where US diplomats actually are, i.e. central Kyiv. The empirical test is the next aerial wave.

Alexander Velez-Green — senior aide to US Under-Secretary of Defense for Policy Elbridge Colby — briefed defence policy chiefs of NATO member states at Alliance headquarters in Brussels on 22 May on a planned structural reduction in the US contribution to the NATO Force Model. Der Spiegel disclosed the substantive content on 26 May; Reuters had earlier confirmed the meeting and Velez-Green's attendance via three sources familiar with the matter. The cuts apply to the Force Model — the framework that replaced the NATO Response Force as the principal mechanism through which Allies designate national forces available to SACEUR for crisis and conflict. The United States intends to provide approximately half its prior number of strategic bombers to the Force Model, reduce its fighter-jet contribution by approximately one third, make fewer destroyers available, and provide no submarines at all. The Trump administration further intends to scale back the provision of armed reconnaissance drones and to require European allies to provide their own surveillance unmanned aircraft. Velez-Green called on European NATO partners to declare by early June what they can offer to fill the resulting capability gaps. A new burden-sharing arrangement is to be presented at the NATO leaders' summit in Ankara on 7-8 July.

The legal floor for total US troop presence in Europe — 76,000 personnel under Section 1249 of the FY2026 NDAA — remains operative. The flexibility clause permits the administration to drop below it provided consultation with NATO and independent assessments are documented, and US troop totals in Europe currently stand near the upper bound (approximately 85,000 prior to the 1 May Germany withdrawal). The Force Model cuts are structurally different from the troop-count floor: they specify capability classes (bombers, destroyers, submarines, fighter contribution) rather than personnel headcount. A Force Model designation can be withdrawn without breaching the 1249 floor. Senate Armed Services Committee chair Roger Wicker and House counterpart Mike Rogers have already characterised the Germany troop withdrawal as "premature"; bipartisan Congressional resistance is a possible braking mechanism on Force Model adjustments but not a structural block.

Attack-submarine availability underpins NATO undersea deterrence in the Norwegian Sea (see Dynamic Mongoose in Force Posture below); no European Ally possesses comparable nuclear-attack-submarine capacity at scale, and the gap cannot be closed by industrial action within the Ankara timeline. The bomber and fighter reductions transfer the long-range-strike and air-policing burdens to the European primes operating PULS, X-Fire and Tomahawk-replacement programmes — a structurally manageable shift on paper, with procurement velocity the binding constraint as the Sondervermögen Bundeswehr funding window closes. The Bundeswehr's 4 May Tomahawk-equipped battalion cancellation, flagged in prior Signals, was the leading indicator; the early-June declaration deadline now sets the inflection point.

Signal: the United States is not withdrawing from NATO. It is reducing what it makes available to the NATO Force Model at the capability classes that determine high-end deterrence — strategic bombers, attack submarines, fighter contribution. Article 5 remains; the US contribution to the force generation underwriting it is being cut at the high-end. European capitals have roughly two weeks to declare force-generation offers at the early-June US-NATO conference; burden-sharing is concluded at Ankara in July, with the result defining the conventional posture baseline for the second half of the decade.

NATO has agreed a structural reinforcement of its Baltic eastern flank. Germany and the Netherlands, in coordination with the Alliance, have assigned the German–Netherlands Corps, headquartered in Münster, to the defence of Latvia and Estonia in the event of war with Russia. Two sources familiar with the matter confirmed the agreement to Reuters on 26 May. Until now, NATO forces in all three Baltic states and northern Poland have come under the command of a single multinational headquarters in Szczecin. The new assignment provides a second corps-level command for the region, addressing what one military source described as the need to bring in "mass at speed" given the Baltics' limited strategic depth. An army corps at full operational strength typically commands three divisions, or 40,000 to 60,000 troops; in peacetime, it operates as a skeleton structure with specialist functions in place — long-range artillery, air defence, engineers, medics — to enable rapid deployment.

The final hurdle was capacity in corps-troop specialist functions; Germany, the Netherlands and other partners will now build these out. The decision comes as the alliance absorbs both the announced US force-generation reduction and the Lavrov readout. The Münster headquarters' assignment to Latvia and Estonia is consistent with the German Defence Ministry's published warning that Russia could mount a large-scale assault on allied territory as early as 2029 — a timeline the Bundeswehr's Operational Command has used since its April 2025 full operational readiness milestone as the planning horizon. The Dutch Defence Ministry on 26 May stated the assignment was "currently being further elaborated"; the German Defence Ministry declined to comment, citing ongoing NATO coordination. NATO confirmed it would respond later.

Signal: the German-Netherlands Corps becomes the second NATO corps headquarters with formal eastern-flank defence responsibility after the Szczecin-based Multinational Corps North-East. The Dutch confirmation contrasted with the German MoD's no-comment posture suggests NATO coordination is still in progress. The Bundeswehr has used 2029 as the planning horizon for a possible large-scale Russian assault since April 2025; the Münster assignment puts a corps headquarters into that timeline at the political level.

Iranian negotiators met Qatari mediators in Doha on 25 May to discuss extension of the 8 April US-Iran ceasefire by sixty days, with reopening of the Hormuz transit corridor as the central operational deliverable; a senior US administration official told the Washington Post on 25 May that a framework had been agreed. Hours later, US Central Command announced "self-defence strikes" against Iranian targets in the Hormuz region. The Iranian Foreign Ministry on 26 May characterised the strikes as a "gross violation of the ceasefire" and reserved a response right; framework negotiations were not formally suspended.

The British Royal Navy is the practical European component. RFA Lyme Bay, docked off Gibraltar, is being loaded with mine-hunting sea drones equipped with sonar and is preparing to deploy to the Strait once a US-Iran agreement is reached; the destroyer HMS Dragon will provide air-defence escort, with the carrier strike group HMS Prince of Wales already in the High North under Operation Firecrest. London is set to be the principal Western mine-clearance contributor in a maritime chokepoint in which European energy security is exposed alongside Gulf, Korean and Japanese imports. The "60-day framework" architecture, if signed, places the UK at the operational lead of any reopening — a posture that does not match the Trump administration's wider European drawdown rhetoric and is therefore worth holding alongside the US force-generation cut announced this week.

Iran has parallel constructed its own institutional architecture: the Persian Gulf Strait Authority, announced on 20 May with Oman as bilateral partner, is being formed to administer transit fees in a "controlled maritime" regime once shipping resumes. Tehran insists this is administrative cost recovery rather than tolls; the distinction is rhetorical. The combination — declared Iranian transit authority, US self-defence strikes pre-agreement, UK mine-clearance loadout — describes a strait that will reopen, but on terms that leave sovereign control of access contested.

Signal: the Iranian Persian Gulf Strait Authority is the institutional novelty — Tehran is constructing administrative architecture before reopening, not after. UK mine-clearance lead in a Middle East file, while US capability assignment to Europe is being cut, is a posture data point worth holding. Both administrative architectures — Iranian transit authority and Western enforcement — are likely to outlast the ceasefire itself.

Darius Kuliesius, deputy head of Lithuania's communications regulator (RRT), told Reuters on 26 May that Russia has increased the number of GPS-spoofing antennae operating from Kaliningrad from three in early 2025 to thirty-six at present, with effective broadcast range of approximately 450 kilometres. The Lithuanian regulator's mapping indicates the spoofing footprint reaches across Estonia, Latvia and Lithuania, most of Poland, parts of Finland, Sweden and Belarus, and the Baltic Sea. The range estimate was derived from analysis of disturbances in aviation surveillance ADS-B transmissions. "The occasional interference began with the 2023 NATO summit in Vilnius," Kuliesius said. "Now they have built up the infrastructure and the interference has become systemic, permanent, unending Russian provocation against European security."

The data is the first publicly disclosed primary-source quantification of the scale of Russian satellite-navigation interference in the European theatre. The interference now affects civilian airspace systems (including the Spanish military jet carrying Defence Minister Margarita Robles last year and the plane carrying European Commission President Ursula von der Leyen en route to Bulgaria), local mobile phone networks in Lithuanian border districts, and GPS-dependent civilian infrastructure including public transport in Klaipeda. Spoofing and jamming spike during Ukrainian drone strikes on Russian territory. The Lithuanian Defence Minister, Robertas Kaunas, took shelter in the Lithuanian parliament under an "air danger" warning on 20 May. UK Defence Secretary Healey's 13 May statement that Russian GPS interference constitutes "warfare against the United Kingdom" (Signal No. 64) is consistent with the Lithuanian regulator's data.

Signal: Russian electronic-warfare capability in Kaliningrad has expanded by an order of magnitude in fifteen months. Civilian GNSS-dependent systems across the Baltic states and northern Poland — aviation, mobile networks, public transport — are now under regular interference. This is the operational reality the German–Netherlands Corps will be reinforcing into.

On the night of 24-25 May the Ukrainian General Staff confirmed strikes on the Belets oil depot in Unecha, Bryansk Oblast — sixty kilometres from the international border and identified as a primary supply node for Russian forces operating in Sumy and Kharkiv directions — together with ammunition storage near Mizhhiria (occupied Crimea), Novoianysol and Kremenivka (Donetsk Oblast), a logistics warehouse near occupied Dokuchaievsk, and the communications hub of a Russian unit in Ivanivka, Donetsk Oblast. On 25 May, the Ukrainian Air Force confirmed deployment of Storm Shadow air-launched cruise missiles to destroy a Russian command-and-communications post in temporarily occupied Luhansk Oblast — the General Staff statement framed the strike as demonstrating that "no position of the Russian aggressor is safe on Ukrainian soil." A separate SBU Alpha Centre operation on 24 May struck the Vtorovo linear production and dispatch station in Russia's Vladimir region, a critical node in the fuel pipeline supplying Sheremetyevo, Domodedovo and Vnukovo airports and major Moscow oil depots, triggering an 800-square-metre fire.

The deep-strike tempo is structurally relevant. Russian aviation fuel supply to the Moscow oblast airport cluster transits the Vladimir node; the Belets depot in Bryansk is the principal sustainment link for the northern front; the Luhansk command post Storm Shadow strike is a UK-provided capability deployed at the moment of maximum pressure on the strategic-bomber–to–Iskander–to–Shahed ammunition cycle. Ukrainian Unmanned Systems Forces commander Major Robert Brovdi has stated drone-strike inflicted Russian casualties exceeded 19,200 in the first nineteen days of May. The contrast in target sets is shaping European political response.

The system-pressure picture from the Russian industrial side was confirmed in parallel. At a Kremlin meeting on 25 May whose readout was published on the President's official website, Alexander Shokhin — head of the Russian Union of Industrialists and Entrepreneurs, the country's most powerful business lobby — told Vladimir Putin that Russian companies were prepared to finance their own purchase of "not only light weapons of 7.62 caliber, but also larger ones, including various electronic warfare systems, laser installations and other calibers" to defend their plants against Ukrainian drone attacks. Shokhin asked for a financing mechanism — "a fund of some sort or another form of targeted financing" — and separately requested a deferral of tax penalties for facilities damaged in strikes. The Russian government has already authorised 7.62-calibre weapons for private security companies guarding industrial sites and permitted reservist drafts into local plant defence units; Shokhin's intervention indicates these measures are operationally insufficient. The Reuters readout, sourced to the Kremlin website itself, is the first explicit Russian industrial-lobby acknowledgment that the Ukrainian deep-strike campaign has materially exceeded existing site-defence architecture.

Signal: Ukrainian long-range strikes across multiple directions — fuel supply at Bryansk and Vladimir, command nodes in Luhansk — are stressing Russian logistics; the Ukrainian Unmanned Systems Forces claims 19,200 Russian casualties from drone strikes alone in the first 19 days of May. The Shokhin RSPP request to Putin for heavier weapons is the domestic-political marker of that pressure.

Czech President Petr Pavel disclosed to the Financial Times on 26 May that the number of countries financing the Czech-led artillery-ammunition initiative for Ukraine has fallen from approximately eighteen at peak to nine, following the December 2025 return to office of Prime Minister Andrej Babiš on a platform of not having Czech citizens pay for Ukrainian weapons. The Czech Defence Ministry confirmed the operational picture to Reuters separately on 26 May: contracted deliveries for 2026 stand at approximately one million large-calibre rounds, with approximately 500,000 already supplied by end-May. The annual trajectory shows clear attrition: 1.5 million rounds delivered in 2024, 1.8 million in 2025, 1.0 million contracted for 2026 — a 44% reduction in annual flow between 2025 and 2026. Financing of approximately €1 billion has been secured for 2026 against the €5 billion target a senior NATO official cited in February. Donors confirmed by the Czech ministry include Denmark, the Netherlands, and Germany; Pavel's office declined to name those that had withdrawn. Cumulatively, foreign donors have provided approximately USD 4.5 billion in funding since the programme's launch in early 2024 per the Czech government.

CSG (Czechoslovak Group) chief executive Michal Strnad told the FT that some former donor states are now buying directly from CSG or from alternative suppliers, indicating partial redistribution rather than wholesale withdrawal. The Babiš government had paused the initiative for several months after taking office over a "legal issue" subsequently resolved; Babiš has rejected any further Czech national contribution, which had been a small fraction of total funding but carried symbolic weight. Increasingly, the shells supplied are extended-range artillery ammunition priced at more than twice the cost of standard rounds, putting further pressure on the per-round economics for the residual donor base. Pavel proposed the architecture's future be among the issues addressed at the NATO summit in Ankara on 7-8 July.

The operational consequence is the trajectory itself. A 44% reduction in annual flow between 2025 and 2026 is what reduced donor participation produces against a Russian fires rate the Ukrainian General Staff places at multiple times Ukrainian return-fire. Political exposure on the remaining nine contributors — particularly the Nordic states and Germany — increases as the donor base contracts. The EU-level instruments (ASAP, EDIRPA, SAFE-tranched ammunition production financing) and the NATO Defence Industrial Production Action Plan remain the only remaining mechanisms at scale, and none is currently delivering at one-million-shells-per-year through the same non-NATO-sourcing-plus-recommissioning model the Czech initiative operates.

Signal: the 1.0 million annual flow in 2026 — down 44% from 1.8 million in 2025 — is what the Czech-led initiative produces with the donor base halved to nine. 2027 either drops further with the next contributor exit or holds at this floor with consolidation under NATO industrial-production financing. Whether the trajectory stabilises depends on Ankara and on whether any further donors exit.

On 21 May 2026, NATO Allied Air Command conducted a high-end training event over the Baltic under EASTERN SENTRY, led by Combined Air Operations Centre Bodø. The activity focused on counter-A2AD operations, multi-domain integration, tactical command and control, and Find-Fix-Track-Target sequencing.

CAOC Bodø leading rather than CAOC Uedem reflects the centre-of-gravity shift toward the northern flank since Finland and Sweden's accession; Bodø now commands airspace from Greenland to the Baltic. The exercise targeted counter-A2AD sequencing against S-400 and Pantsir layered air defence.

Dynamic Mongoose 26, NATO's anti-submarine warfare exercise, runs 18-29 May in the Norwegian Sea under MARCOM, hosted by Norway as the maritime component of Arctic Sentry. Nine allies are participating; submarines from Germany, the Netherlands and Portugal are under COMSUBNATO control. Surface and air assets include Portuguese frigate NRP Dom Francisco de Almeida under SNMG1 and Royal Navy Merlin Mk2 helicopters from HMS Prince of Wales.

On 21 May, the Russian Vishnya-class intelligence collector Yury Ivanov was detected loitering near the exercise area; the Portuguese frigate and an embarked Merlin from Prince of Wales conducted the shadow under SNMG1 coordination. The Prince of Wales Carrier Strike Group is deployed in the High North and Atlantic under Operation Firecrest. Mutual shadow between NATO undersea forces and Russian SIGINT collectors is now the baseline along the Bodø-Norwegian Sea-Trondheim axis.