The US seems more than happy to let Afghanistan continue in perpetual war if it means its own interests are secured, even if they've realised there's no beating the Taliban, the US deep state seem quite happy with the war. It's the US public that is sick of it, but even they don't see it as a major issue, hardly any US troops, and it's been going on for so long that most people have forgotten about the war. It's no longer a major issue in the political discourse in the US, which means the oligarchs of the US can handle that policy as they fit without any public scrutiny, that's bad for us, but at least it means that Afghanistan is stuck in a stalemate, where the Taliban are only waiting now to topple the wobbly and unstable kabul government.