Israel mounted waves of pounding airstrikes in Beirut on Tuesday as its security cabinet was due to discuss a ceasefire deal with its Hezbollah foes that could take effect as soon as Wednesday.

The U.N. Security Council unanimously adopted Resolution 1701 in August 2006 as part of a cease-fire that ended Israel’s last war with Lebanon. The resolution sought to create a buffer zone in southern Lebanon to prevent fighting between Israel and Hezbollah, but has failed to keep the peace.