Ti set the record a bit straighter:

It wasn't Hezbollah started lobbing bombs and rockets around this time.   Hezbollah carried out a cross border raid on July 12th in which two Israeli soldiers were caotured and two killed. There was then a reprisal cross-border Israeli raid in which five Israeli's were killed. Nasty stuff, but soldiers fighting soldiers isn't "terrorism".   Lots of nasty things aren't terrorism, and we should use words accurately.

Then on July 13th came a wave of Israeli aerial raids and bombardment in which Beirut International Airport, way to the North of Hezbollah's stamping ground, was attacked; and about 40 Lebanese were killed in various air attacks, many of them civilians with no involvemnt in Hezbollah. Only then did Hezbollah start sending over the Katyusha rocketsd in reprisal.

Those Hezbollah reprisals were clearly terrorism - but the same is true of the precipitating Israeli air strikes terrorism. It's terrorism when attacks are aimed at civilian targets to achieve political ends, and both sides have clearly been doing that.