"…Korolev needed to go full speed ahead with the satellites development, so he stressed the potential military importance of the satellite. "With the help of the satellite… [it] will be possible to receive important data necessary for future development of science and military technology… it will be possible to conduct photo-reconnaissance of the (Earth's) surface…" he wrote in the Aug. 5, 1955, letter to the new Soviet leader Nikita Khrushchev."