The U.S. Embassy in Kyiv closed on November 20 due to specific warnings of a potential air attack. Though not naming Russia, the embassy's closure reflects escalating tensions as President Putin lowers the threshold for nuclear weapon use. Ukrainian officials dismissed attack warnings as psychological operations aimed at inciting panic, while both sides continue missile and drone strikes. The embassy urged staff to shelter in place amid the ongoing conflict, with the U.S. recently allowing Ukraine to use long-range missiles against Russian targets.