European Security — 2026-06-18

Poland and Germany Sign Defence Cooperation Agreement

BLUFNawrocki's veto threat and reparations politics make it very unlikely Poland and Germany upgrade this interministerial framework to a ratified bilateral treaty within 24 months of the June 17 signing.

Poland's Defence Minister Władysław Kosiniak-Kamysz and German Defence Minister Boris Pistorius signed a defence cooperation agreement in Warsaw on June 17, replacing a 2011 framework accord and adding cooperation across military mobility, Baltic Sea maritime security, cybersecurity, and space 123. The document is interministerial rather than a treaty and carries no mutual security guarantees beyond existing NATO and EU obligations, unlike Poland's bilateral treaties with France and the United Kingdom 14. Polish Foreign Minister Radosław Sikorski said President Karol Nawrocki would never ratify a German-Polish treaty, explaining that "all hell would break loose" 14. The agreement also provides for German troop contributions to Poland's Eastern Shield border fortification program 45.

Analysis
Treaty elevation is very unlikely within 24 months. Nawrocki's veto threat is structural: the unresolved reparations issue sustains Law and Justice's electoral base and will sharpen ahead of Poland's 2027 general election, giving the president every incentive to hold. The German cabinet's framing of the accord as a practical NATO complement signals neither side is spending political capital on escalation. Moderate confidence rests on Sikorski's rationale being corroborated across independent outlets and Nawrocki's documented record of opposing normalization. A future Tusk-aligned president could move to treaty elevation before that window closes, at which point NATO eastern flank planners would face pressure to re-weight force posture calculations beyond Article 5.
6 sources
  1. Poland and Germany sign defence cooperation agreement - Notes From Poland
  2. Cabinet approves German-Polish defence agreement - Federal Government of Germany
  3. Polska i Niemcy podpisały umowę o współpracy obronnej - Rzeczpospolita
  4. Germany and Poland sign new defense deal as balance of power in Europe shifts - ABC News (AP)
  5. Germany and Poland sign new defence deal as balance of power in Europe shifts - Euronews
  6. Germany and Poland are to sign a new defense deal as the balance of power in Europe shifts - The Washington Post

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