Beirut (Reuters) - 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. The Lebanase Army has been stepping up efforts to prevent Sunni Muslim fighters from Syria entering Lebanese border towns. Last month, the **rthern town of Arsal was the scene of the deadliest spillover of fighting in the three-year-old civil war in Syria. ...