During the ultimately failed talks for an Anglo-Franco-Soviet alliance in the spring and summer of 1939, Bonnet and the rest of the French leadership pressed quite strongly for the revived Triple Entente, often to the considerable discomfort of the British. In the spring and summer of 1939, Bonnet very strongly believed that a "grand alliance" of the Soviet Union, Great Britain and France would deter Germany from attacking Poland. At a meeting with Lord Halifax on 20–21 May 1939 in Geneva, Daladier, Bonnet and Saint-Legér pressured the British Foreign Secretary repeatedly for a "grand alliance" as the only way of stopping another world war.