事关外星人！特朗普称奥巴马犯了个大错：他泄露了机密信息

Group 1 - The core viewpoint of the article revolves around the controversy regarding former President Obama’s comments on extraterrestrial life, which President Trump claims leaked classified information [1][4]. - Obama stated on a podcast that extraterrestrial life likely exists but clarified that he has not seen evidence of contact during his presidency [4]. - The U.S. government's Area 51 has long been associated with alien research, yet official statements remain vague [4]. Group 2 - NASA held a public meeting on May 31, 2023, to discuss unidentified flying objects (UFOs), highlighting the challenges posed by a lack of high-quality data [4]. - The Defense Department established the All-domain Anomaly Resolution Office in 2022 to investigate reports of unidentified aerial phenomena (UAP) from military pilots, with over 800 incidents recorded, most of which have simple explanations [5]. - The House Intelligence Committee held a hearing on UFOs in May 2022, emphasizing the need to take unidentified aerial phenomena seriously as a potential national security threat [6].