Iran deployed Revolutionary Guard forces to fight in Iraq, helping government troops there wrest back control of most of the city of Tikrit from militants, Iranian security sources said.

Two battalions of the Quds Forces, the overseas branch of Iran’s Revolutionary Guard Corps that has long operated in Iraq, came to the aid of the besieged, Shiite-dominated government of Prime Minister Nouri al-Maliki, they said.

Combined Iraqi-Iranian forces retook control of 85% of Tikrit, the birthplace of former dictator Saddam Hussein, according to Iraqi and Iranian security sources. […]