In some scenario where the USSR collapses in 1941 or 1942 (as in Anglo/American-Nazi War, and similar premises), is there any chance that the Caucasus could develop into a major theater of operations, with Allied troops pressing northward to, first, deny the Nazis access to Baku's oil, and second, to reopen the Eastern Front?
The Allies already maintained a lend-lease route to the USSR through Persia--could this be expanded to support an American or British army operating along the Caspian coast?
How would this impact Turkey's relations with either side?
If the invasion is successful in repelling the Nazis from the oil-rich parts of the southern USSR, could it be expanded into a general offensive into Ukraine?