France's President Emmanuel Macron (R) and Poland's Prime Minister Donald Tusk arrive ahead of their meeting at the Nancy's town hall on Stanislas square in Nancy, eastern France, on May 9, 2025. France and Poland on May 9, 2025, will sign a new strategic cooperation treaty, with Polish leader Tusk insisting that a mutual security pledge will be at the heart of the agreement. (Photo by Christophe PETIT TESSON / POOL / AFP)