Poland and Germany Sign a Defence Pact With a Joint Baltic Command but No Bilateral Mutual-Defence Guarantee

The agreement was signed in Warsaw on the 35th anniversary of the 1991 Treaty on Good Neighbourliness and Friendly Cooperation. Its German cabinet text, approved on 10 June, formalises cooperation across military mobility and the logistical infrastructure to move forces between the two states, a joint command for the Baltic Sea, cybersecurity, defence-industry collaboration, joint exercises and hybrid-threat response. A parallel joint declaration by the two foreign ministers marked the anniversary the same day.

On the central question of guarantees, the text adds nothing new. Per the German federal government, it reaffirms the mutual obligation to provide assistance in the event of an external attack in accordance with Article 5 of the NATO treaty and Article 42(7) of the EU treaty — that is, it points back to existing multilateral commitments rather than creating a bilateral one. Warsaw kept the deal deliberately narrow; the government anticipated a veto threat from President Karol Nawrocki and the Law and Justice opposition over anything resembling a treaty with Germany.

The proprietary read. This is the load-bearing distinction. Poland's earlier treaties with France and the United Kingdom carried bilateral assistance language; the Franco-Polish text reaches as far as a conversation on extending the French nuclear umbrella. The German agreement carries none of that — it is cooperation, not a pledge. Warsaw is nonetheless assembling a hub-and-spoke web of bilateral defence treaties — France, the United Kingdom, Germany, and an Italian agreement in preparation — precisely as multilateral guarantees thin and the US drawdown proceeds. The pattern matters more than any single document: deterrence is being re-stitched nation by nation, and Warsaw is making itself the hub. As covered in Signal No. 84.