The godless Bolsheviks have invaded our Persian neighbors.  Since you have been so successful against the british infidels, the Persian  people have called on you to deliver them from oppression. Clearly Allah is on your side.  You will lead your forces of Islam into Iran and capture the towns of Darkhrain and Hoseyniyeh. If necessary, you must also support the Persian garrison at Khorramshahr.  Our only airfield in the region is located there, so it must be held at all costs.