The protesters were gathered outside the U.S. Embassy compound.
U.S. troops fired tear gas on Wednesday to disperse pro-Iran protesters who were gathered outside the U.S. Embassy compound in Baghdad for a second day.
Dozens of pro-Iranian militiamen and their supporters had camped out at the gates of the embassy in Baghdad where they stayed the night, a day after they broke into the compound, trashing a reception area and smashing windows in one of the worst attacks on the embassy in recent memory.
The U.S. Marines guarding the embassy fired tear gas after the protesters lit a fire on the roof of the reception area. Smoke rose from the building.