they've done in syria have purchased a russian air defense system that has also roiled the alliance. and there is great anxiety about whether president trump will further roil the waters with comments he might make in london about defense spending, which has been an issue he has seized on throughout the years as president. >> the british were also on the ground in syria without any publicity. we are the air support. we are the supply line. once the u.s. withdrew, they couldn't stay. >> and the medical evacuation and the logistics. we are the backbone of that operation. to simply walk away from it and to walk away from our kurdish allies is a signal that will haunt u.s. foreign policy for decades. >> nato is present as an alliance in afghanistan so there's great concern about what the president might decide about