President Trump vowed this week to release the government's files on aliens and UFOs, the latest instance of declassifying records that have fueled Americans' fascination with conspiracies for decades.

Donald Trump has directed the release of government files related to alien and extraterrestrial life, unidentified aerial phenomena (UAP), and unidentified flying objects (UFOs).

Trump’s post said in part, “Based on the tremendous interest shown, I will be directing the Secretary of War, and other relevant Departments and Agencies, to begin the process of identifying and relea...