The “Weimar Triangle” was inaugurated in 1991 as a trilateral cooperation between France, Germany and Poland. It has been acting as a mediator between the “old Europe”, represented by the French-German relationship and the “new Europe” represented by Poland. However, this new Europe has been characterized, among other things, by Poland’s support of American politics. The article discusses this and other conflicts and shows that, in spite of disagreements between its members, the “Weimar Triangle” continues to serve as a model of national cooperation, due to flexibility and adjustment.