This whole thing is breaking down along Sunni/Shi'ite lines.
Isn't that their plan?
They couldn't get a Muslim war against the west... So now they be working on a civil war.
You got it. The purpose of the Hezbollah offensive and hostage is to force the Saudis to pick a side, or more specifically, force them to crack down on their own Shiite minority in northeastern Saud.