Lets see, how did the that last war work out? Seems it went fairly well and things were fairly stable until our coward in chief and his allies decided that we had to prematurely leave the conflict. There were a lot of military people as well as statesmen who predicted that the US leaving would destabilize Iraq and they were completely right.
Did we get em all? No but we were doing much better then than we are now. At least we had boots on the ground and a motivated force willing to try.
Terrorism over yet? Nope but our current strategy of pretending like it doesn't exist or that we can somehow control it with airstrikes and drones is ridiculous.
Our kids are still over there but in insufficient numbers to make any difference and our kind hearted liberals aren't willing to let us fight to win. We have to fight with one arm behind our backs because we need to fight a kinder, gentler war without injuring the innocents these cowards hide behind!
I'll be honest. These men were not Nostradamus. They knew what the answer was because anyone who had been involved in the wars could see that the US was the only force capable of bringing some semblance of peace. All the crap about how well we built up governance and local military power and a hand off plan was a bunch of BS fed to the public about how well it was going. Which is why you had John McCain be perfectly honest, if you want a stable middle east, then you are arguing for a never ending occupation by your sons and daughters.
It wasn't hard to see that when President Bush signed the withdrawal agreement before he left office that Iraq wasn't going to last long. The govt we were protecting in Iraq was actively involved in ethnic cleansing, if you don't have leadership at the top, you don't have it anywhere.