The news [of Pearl Harbor] came as a surprise to Hitler although he knew of their intention to attack somewhere at some time and had made up his mind to support them if they attacked the United States. Now frivolously disregarding the huge financial and productive power of America and, according to ... von Puttkamer, blind to the realization that this power could be projected across the Atlantic, he gained renewed confidence in a victorious outcome to the war. His generals suffered from the same land-locked hallucination: his entire headquarters staff gave themselves up to 'an ecstasy of rejoicing'; the few who saw further 'became even lonelier'.