There is NOT enough air transport capacity to supply them. As the Germans learned to their sorrow, supply by air depreciates in short order as transport suffers the strain of constant use as well as enemy action. Airfields will probably be overrun or rendered unusable in the first 48 hours AND combat supply drops are typically only 40% effective.
Assume also coordinated attacks and incursions by North Korea on South Korea and the Chinese on Taiwan once our guys are cut off. The Russian Black Sea Fleet has been reactivated and re-armed—blocking a Mediterranean supply and exit. The Turks are NO friends of ours and are biding their time to reestablish their Ottoman Empire. Iran holds positions all along our right flank AND has experienced combat troops who fought Saddam in that same area for a generation. The Saudi’s would love to see us stumble and would jump at the chance to extend their influence.
IF we go nuclear prevailing wind patterns will carry fall-out into Europe and Eurasia—no one talks about the political implications of that; but we will immediately lose whatever European support we have. We will also be confronting Russian and Chinese nuke capacities both from a fall-out standpoint and because they too have ambitions in this oil rich area.
Putin has NOT been sitting on his hands—under the guise of subduing Chechnya, he has been moving troops south and establishing supply points, bases AND, most importantly, air fields loaded with first line Fighters and Air to Ground support aircraft.
The Chinese have been setting up strategic alliances throughout the area and securing their access corridor to the Middle East via Tibet. They are allied with Iran and have been supplying Sunburn missiles in quantity AND expanding their attack submarine fleet. Their strategy is to eliminate or neutralize our Naval Carrier groups.