-Focus on making sure your border with Turkey and USSR are secured (Forts, tons of units, etc)
-Attack easy places like Iraq and Afghanistan and other AI states
-Once you are confident in your ability, attack British India first, then Turkey when you are done with that
-Maybe launch a large attack on USSR if it's still alive, if not Germany (They don't pay as much attention to their borders with you. Most of the time)
-If your done that, I think you can probably win or take a high place on the leader-board in the end.
Do not invade Iraq or British India, because they have high population with high grain consumption avoid it, if you can! Nice target is Saudi Arabia!
Wait till everybody is died in Europe!
Wait till Japan kill all those Asian countries and struggaling from grain shortage and loose moral...
Wait till players in america get bored and go inactive.
and finally win the game... easy.... I already made it with Persia! lol