In March 1939 Hitler decided to annex Czechoslovakia completely and risk war. He turned once again to the Luftwaffe to assist him achieving diplomatic results. The threat of aerial bombardment proved a crucial in forcing smaller nations to submit to German occupation. The successes confirmed Hitler's view that air power could be used politically, as a "terror weapon". In a series of meetings in Berlin, Hitler told Hácha that half of Prague could be destroyed in two hours, and hundreds of bombers were ready for the operation. Sperrle was asked by Hitler to talk about the Luftwaffe, to intimidate the Czech president. Hácha purportedly fainted, and when he regained consciousness, Göring screamed at him, "think of Prague!"