Very simplistic thinking.
President Bush had very similar thinking, originally. He thought we could just plow through Iraq, then on to Syria, and finally Iran, and then the entire Middle East would be just one big US colony.
The problem was that we didn't even have enough troops to stabilize and pacify Iraq. We hired thousands of mercenaries, set them free from rules of engagement, the UCMJ, etc., and they couldn't do it either. It wasn't a matter of money.
US miltary adventurism and economic hegemony don't prevent terrorism, they CAUSE it. There was no terrorism in Iraq before we took the place over, in the process taking over Al Quaeda's recruitment efforts as well.
We are past the time when we could just dictate terms to the rest of the world. We are a superpower in decline, and have been since Reagan at least. The Soviet Union collapsed of its own weight, and we can learn from its misfortune or we can follow it down the drainpipe of history.