What is Al-Qaeda's endgame anyway?

Like most political movements, the main purpose of Al-Qaeda is to increase the power and prestige of its leadership. The propaganda they feed the rank and file have nothing to do with the leadership’s actual goals.

These two posts sum the situation up rather well, IMO. The Nazi soldiers, some of them, may have been fighting for a racially pure Fatherland, and a couple of the high-ranking leaders may have bought into the whole Ubermensch thing, but international politics is about power and money, not Religion or Philosophy.