Lebanon: Holding the line for nonviolence

There was a car-bomb in Beirut a short while ago. In the north of the city, a mainly Christian area. Seven people reported injured, thank G-d so far none reported killed.
I hope to heck this is not the beginning of a slide back into violence. I wish every political and community leader in Beirut would publicly join a commitment not to resort to violence. I wish every foreign embassy and NGO would turn itself into an active nonviolence advocacy and monitoring group.
Can the line be held against the onrush of violence? Praying is not enough (though it might help). But it is human choices, human actions, and human leadership that must hold this line.