Yeah a US IC would be ideal but how long would it take them to get there and build it? Would it be too little too late?
UK could build one quickly but could they afford to build the IC and then produce units out of it? What would they give up to do it?
Russia could take them quickly and they need the income but could they hold it? I know this is a weird idea but suppose Russia were to take them and plow the money back into a Soviet IC, then build a couple infantry units there each turn. The extra income would help it pay for itself and they get to deny Italy or Germany the oil NOs. Or they could just build a coupld mechanized infantry each turn and drive them down from Volgagrad (2 mechs cost $8, which is what USSR would get if they can hold Iraq, iran and Syria)