"Under the French umbrella," was the front-page headline the liberal daily Gazeta Wyborcza, one of the most influential in Poland, ran on March 30. The newspaper was referring to the treaty currently being negotiated between Paris and Warsaw, which is set to be signed by the end of June. "The new treaty between Poland and France, the only nuclear power in the European Union, must include security guarantees. The announcement of French military aid in case of an attack against an ally is unequivocal," wrote Gazeta Wyborcza.

The agreement, called the "Nancy Treaty," has been presented by the French diplomatic corps as a "premium" treaty, similar to those France signed with Germany (the Aachen Treaty, 2019), Italy (the Quirinal Treaty, 2021) or Spain (the Treaty of Barcelona, 2023). It marks the first time Paris has decided to sign this type of document with a country it does not share a border with.

In these treaties, the "indivisible nature of the security interests" shared by the signatories, as well as a guarantee of mutual assistance in case of armed aggression "by all means they have at their disposition," to use the Aachen Treaty's terminology, have been particularly emphasized.

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