WATCH: UN peacekeeping force attacked in Lebanon, Hezbollah implicated

Spanish UN peacekeepers in an armored personnel carrier patrol the Lebanese border side, left, as Israeli soldiers patrol, right, at the Lebanese-Israeli border near the southern village of Kfar Kila, Lebanon, May 8, 2013. In southern Syria, rebels were holding four U.N. peacekeepers who were abducted Tuesday near the Israeli-occupied Golan Heights. The abduction was the second such incident in the area in two months. It exposed the vulnerability of the U.N. peacekeeping mission during the Syrian civil war and sent a worrisome signal to Syria's neighbors — including Israel — about the ensuing lawlessness along their shared frontiers. (AP/Lutfallah Daher)