I think that Nasrallah is being set up by the Bush Adminstration to complete what Israel has failed to do.

The war of words between Lebanon's political leaders has finally turned into battles on the streets of Beirut. Today, gun battles have erupted in Beirut following a speech by Hezbollah's Secretary General, Hassan Nasrallah, in which he labeled the Lebanese government's decision to dismantle a Hezbollah operated communication network a "tantamount to a declaration of war."

http://www.huffingtonpost.com/jamal-dajani/civil-war-in-lebanon_b_100916.html