I agree with you, NATO is presently divided between "Old Europe" with a subtle Turkey and the fledging ex-Warsawites backed by a distant America. But the possibility of NATO falling apart in the near future appears highly improbable to me. It would be better to fall back on its original partners' experience and accept that Russia has drawn a line in the dirt.
America under Bush has over-extended itself. The NATO did not rush into the Iraq debacle. It was the "Coalition of the Willing," a muddle of satrapies along for the ride hoping to cash in on the way out. Like Georgia.