The Cold War doctrine was centered in the north European plain and consisted of the "air-land battle" backed up by a strategic nuclear deterrant. Naval forces were to counter Soviet submarine capability and to resupply the air-land forces as that battle proceded.
That doctrine is now obsolete. Viet Nam, Afghanistan and Iraq have shown the face of modern land warfare. Air warfare and sea warfare are merely adjuncts of land warfare, regardless of what was thought in Afghanistan (1990s), Somalia (1990s), the Balkans (1990s) and in Israel (2006). Those actions are the "Bill Clinton Doctrine." I.e., the political polls don't negatively respond to minor actions that cause loss to throw away military forces.
Contrary to the impressions of the 1990-91 campaign in Kuwait/Iraq, the doctrine there was also obsolete. No one on this planet was able to contest the US in a conventional conflict. You either had to have nuclear weapons or fight an assymetrical war with constantly replaceable guerilla forces.
Now, not many can mount nukes to the degree that the US could not overwhelm, but the assymetrical approach seems the most logical response. So, the US has to accomodate by going to war with such opponents, or those just posture and have little effect. Does anyone really think the Taliban or Al-Quaeda can threaten the existence of the US or even damage it to any real degree?
The problem for the US is that it has to retain sufficient conventional forces to fight some level of armored/air battle, and sustain an increasing level of tactical level and special forces to counter assymetrical warfare. Frankly, the US advantage in air and sea capability makes all of that one hell of a lot easier, but it still poses problems that have yet to be solved.
The issue of nuclear obliteration is really not an issue at all. Russia and China and India are all societies run by rational elites. If some nuclear attack by insane terrorists killed 1,000,000 Americans, there would soon be no one left alive in a lot of geographic expressions on this planet that could be mentioned. There would still be 299,000,000 Americans left. And there would be a lot of votes in that, believe it.
Edited by pikeshot1600 - 11-Feb-2008 at 00:36