At least four people have been killed and over 50 wounded so far in renewed sectarian clashes in Tripoli on Wednesday. Explosions and machinegun fire rocked the city from midnight as Sunni Muslim supporters of the government battled with Alawite gunmen close to the Shi'ite Hezbollah-led opposition. The fighting began after four grenades exploded on a street separating a Sunni district from an Alawite one. Army units, which had deployed in the area to end last month's clashes, attempted to intervene but got caught in the crossfire and also suffered causualties. Lebanon ended an 18-month political crisis in May when the Western-backed coalition reached an accord with the Hezbollah-led opposition in Qatar. Th