FGM-184
The FGM-148 "Javelin" is an American Man-Portable Fire-and-Forget Guided Anti-Tank Missile; which replaced the M47 Dragon. The FGM-148's main feature is it's Infrared-Guided Top-Attack Mode.
The United States is supplying Ukraine with a number of FGM-184 Guided Missile Systems to counter Russian Presence on their border.