Between 27 and 29 April 1938, Bonnet visited London with Daladier for meetings with Neville Chamberlain and Lord Halifax to discuss the possibility of a German-Czechoslovak war breaking out, and what the two governments could do to stop such a war. During the talks, the French ministers argued for firm declarations that both nations would go to war in the event of a German aggression and agreed to a British suggestion that the two nations pressure Prague into making concessions to the Sudeten "Heimfront" of Konrad Henlein. The London summit marked the beginning of a pattern that was to last throughout 1938, where the French would begin talks with the British by demanding a harder line against the "Reich", and then agree to follow the British line. In the view of Bonnet and Daladier, these tactics allowed them to carry out their foreign policy goals while providing them with a cover from domestic critics by presenting their foreign policy as the result of British pressure. As Bonnet told the American Ambassador William Christian Bullitt, Jr., his "whole policy was based on allowing the British full latitude to work out the dispute" because otherwise, France would have to bear the main responsibility for pressuring concessions on Czechoslovakia. Throughout summer 1938, Bonnet allowed most of the diplomatic pressure applied to President Edvard Beneš for concessions to Henlein to come from London. This led to sharp complaints from the British that Bonnet should do more to apply pressure on Beneš.