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In this photo released by the Syrian official news agency SANA, damaged buildings wrecked by an Israeli airstrike are seen in Damascus, Syria, Sunday, May 5, 2013. Israeli warplanes struck areas in and around the Syrian capital early Sunday, setting off a series of explosions as they targeted a shipment of highly accurate, Iranian-made guided missiles believed to be on their way to Lebanon's Hezbollah militant group, officials and activists said. The attack, the second in three days, signaled a sharp escalation of Israel's involvement in Syria's bloody civil war. Syria's state media reported that Israeli missiles struck a military and scientific research center near the Syrian capital and caused casualties. (AP Photo/SANA)

Syria at war

Syrian rebels

said on June 21 they have received new weapons from friendly countries that

could lead to changes on the ground and victories against President Bashar Assad's forces. The civil war has killed tens of thousands of people, displaced more than four million and turned neighbor against neighbor, with civilians

paying the price. (Reuters)