If America withdrew from Iraq and Afghanistan and exposed everyone who had cooperated with us to reprisals.
As happened in South Vietnam. The negotiated peace was more or less holding after American withdrawal. But then a Democratic Congress refused to authorize any further support for the South Vietnamese government. No more armaments. No more budget.
In other words, we forcibly disarmed our allies, while their enemies continued to be supplied by the great Communist powers. The message was clear: Those who rely on America are fools. We didn't even have the decency to arrange for the evacuation of the people who had trusted us and risked the most in supporting what they thought was our mutual cause.
We did it again, this time in the Muslim world, in 1991, when Bush Senior encouraged a revolt against Saddam. He meant for the senior military officers to get rid of him in a coup; instead, the common people in the Shiite south rose up against Saddam.
Bush Senior did nothing as Saddam moved in and slaughtered them. The tragedy is that all it would have taken is a show of force on our part in support of the rebels, and Saddam's officers would have toppled him. Only when it became clear that we would do nothing did it become impossible for any high-ranking officials to take action. For the price of the relatively easy military action that would have made Saddam turn his troops around and leave the Shiite south, we could have gotten rid of him then -- and had grateful friends, perhaps, in the Shiite south.
That is part of our track record: Two times we persuaded people to commit themselves to action against oppressive enemies, only to abandon them. Do you think that would-be rebels in Iran and Syria and North Korea don't remember those lessons?