TIMELINE - Political impasse and fighting in Lebanon

(Reuters) - Arab League mediators brokered a deal on Thursday to end Lebanon's worst internal fighting since the civil war, political sources said, after the U.S.-supported government backed down in its conflict with Hezbollah.

Here is a chronology of Lebanon in the last 18 months.

November 11, 2006 - Five pro-Syrian Shi'ite Muslim ministers from Hezbollah and its ally, the Amal movement, resign after the collapse of talks on giving their camp more say in government.

November 21 - Industry Minister Pierre Gemayel is killed.

December 1 - Hezbollah, Amal and supporters of Christian leader Michel Aoun camp outside Prime Minister Fouad Siniora's office in Beirut in open-ended campaign to topple the government.

June 13, 2007 - Anti-Syrian parliamentarian Walid Eido and five other people killed by a car bomb near a Beirut beach club.

September 2 - Lebanese troops seize complete control of Nahr al-Bared camp after months of fighting with Fatah al-Islam militants which kills over 420 people, including 168 soldiers.

September 19 - Car bomb in Beirut kills anti-Syrian Christian lawmaker Antoine Ghanem and six other people.

November 23 - Lahoud leaves presidential palace at end of his term, no successor has been elected. Next day Siniora says his cabinet is assuming executive powers.