The United States and Iran are both helping fight Sunni militants in the Islamic State group. But one of the biggest battlefields is Syria, where Washington and Tehran back opposing sides in the civil war.
The United States and Iran are both backing Kurdish fighters in Iraq who have retaken some ground near the Syrian border with help from coalition airstrikes against Islamic State fighters, who are also known as Daesh.
Meeting with Arab allies, U.S. Secretary of State John Kerry said there is broad support for the fight.
Read the full article at Voice of America.