Bringing liberty to Afghanistan and Iraq (same war, same enemy) was part of the exit plan, which can be debated. But the war is, was and always will be about taking out The Taliban and Saddam Hussein, and engaging the radical islamists where they live, train and work. Which, despite all the moans and protests, is precisely what's happening. We're fighting Al Qaeda in Afghanistan. We're fighting them in Iraq. And they haven't been able to hit us at home in five years. The war wasn't some arbitrary expansion of democracy, it was a response to an atrocity that came to our shores in the name of islam. And it's being won, despite these constantly attempts to demean the mission.
As to Clinton and the nonexistent conservative double-standard, if Clinton had been honest about the first WTC attack and its origins in 1993 and responded adequately (rather than firing a couple of cruise missiles at Iraqi intelligence headquarters in the middle of the night a few months later), conservatives would have supported him. I know I would have. But providing air cover for the KLA and the islamists in Kosovo was an entirely different matter. There is no rational comparison between Afghanistan/Iraq and Kosovo.
We are fighting Al Qaeda in Iraq now, precisely because this war (e.g. destruction of the Ba'thist secular regime, created new recruting opportunities for them. Iraq is not a fly-paper but a fly hatchery for Islamofascists. Let me also note that our allies in both Iraq and Afghanistan have been persecuting and expelling Christians and women with our tax dollars.