Israeli aircraft struck Hezbollah weapons smuggling sites along Syria's border with Lebanon, testing a fragile ceasefire that halted months of fighting between the sides. The strike came as unrest spread to other areas of the Middle East, with Syrian insurgents breaching Aleppo in a shock offensive. The truce between Israel and Hezbollah calls for an initial two-month ceasefire in which the militants are to withdraw north of Lebanon's Litani River and Israeli forces are to return to their side of the border. The ceasefire has been marked by sporadic violations and accusations from both sides.