Islamic State, a Sunni Muslim militant group, has seized a third of Syria and large areas of Iraq and this year proclaimed a caliphate across the two countries in the heart of the Middle East.
When Islamic State fighters tried to storm the Tigris River town of Dhuluiya north of Baghdad this week, they were repelled by a rare coalition of Sunni tribal fighters inside the town and Shi'ites in its sister city Balad on the opposite bank.
Iran is to give a military grant to the Lebanese Army, the head of Iran's national security council said on Tuesday, boosting security forces that are already backed by Saudi Arabia and the United States.