During the summer of 1938, the British government received several messages from members of the anti-Nazi opposition in Germany, such as Ewald von Kleist-Schmenzin, seeking to use the Czechoslovak crisis as the pretext for a putsch. Chamberlain was generally indifferent to the proposals and refused British support. The American historian Gerhard Weinberg argued that the three visits to London in the summer of 1938 by three different messengers from the opposition, each bearing the message (a firm British stand made in favour of Czechoslovakia would cause a putsch that would remove the Nazi regime), with each ignorant of the other messengers' existence, presented a picture of a group that was apparently not very well organised. Thus, it is unreasonable for historians to expect Chamberlain to have staked the crucial question of war and peace on the uncorroborated words of such a group.Weinberg, The Foreign Policy of Hitler's Germany Starting World War II, 1980, p. 396
