AdvertisementPentagon Says 34 U.S. Troops Suffered Brain Injuries From Iranian Missile StrikeJanuary 24, 2020David WelnafacebookEmailDamage at the al-Asad military base in Iraq, days after a missile attack by Iran. The barrage was in retaliation for the U.S. killing of a top Iranian general in a drone strike in Baghdad on Jan. 3. (AFP via Getty Images)