Well, it's certainly not against Stoicism's principles to assign values to things you don't control.

“The U.S. decision to leave Afghanistan without leaving a residual force was against the advice of the military chain of command. Many…

Well, it’s certainly not against Stoicism’s principles to assign values to things you don’t control. (That’s a common misinterpretation of the philosophy, directly rebutted in Cicero’s De Finibus and other sources.) This article doesn’t criticize the concept of an exit from Afghanistan. What it actually says is about the way the exit was handled. See below:

“The U.S. decision to leave Afghanistan without leaving a residual force was against the advice of the military chain of command. Many veterans disagreed with that decision, but many did agree. Where there was almost unanimous agreement among veterans was the need to keep the promise made by their government to those Afghans who fought alongside U.S. troops.”