The Brits already want to bring in the Talis and the others don’t count. Some of the NATO contingents, the Canucks, the Danes, and the Dutch have been first rate troopers, but their govts see no benefit to killed in action notices in their press. A decent interval, to reprise a phrase from Kissinger, will be given and then out we’ll go. To be replaced in the region by???? Putin???
After that, who knows? The NATO allies will get 'jumpy'. If Obama makes any 'withdraw-noises', they'll run for the exits.