I too am interested on why Biden is keeping mum on this massive shift in policy. All but the most blood thirsty people seem weary of the level of involvement that the US has had.

This also reminds me of something that I've heard Biden told Obama, that the generals always ask for more, more, more. It's part of the president's job to know when to say no. Civilians, not the military, ultimately are supposed to call the shots.