Do UFOs with little green men inside exist or not?

So do UFOs with little green men inside exist or not? CNN supposedly filmed a UFO moving at a great speed from the right to the left during the inauguration of President Barack Obama. (But those who watched the replay say it was a bird.) After that, former President Clinton's White House Chief John Podesta, now one of Obama's closest associates, demanded that the thick UFO files be made public. The number of UFO sightings has dramatically increased in recent times. According to Britain's Ministry of Defense, there were supposedly 285 UFO sightings in the UK in 2008, double the figure for 2007, when the number of alleged UFO sightings was reckoned at 137. (UFOs attacking Ukraine. Video UFO seen over Moscow during Russia - Netherlands match. Video) The defense departments of the United States and the Soviet Union scrupulously registered alleged sightings of UFOs for decades. American ufologists say that the U.S. authorities were quite serious about the UFO question in the 1940s through 1960s. Project Blue Book, terminated in 1969, had two goals: to determine if UFOs were a threat to national security, and to scientifically analyze UFO-related data. WeThe USAF concluded that UFOs are not a threat to national security. Ironically, the military still refuse to provide information about UFOs for security reasons.