This is a job for Hollywood.
Let him in to NYC.
Get the best hollywood makeup artists to create his double.
When Ahmadinejad locks himself in his hotel room, launch the double on a drunken tour of every titty bar in NYC, complete with lap dances. Provide plenty of press.
Then pay the double handsomely and tell him he'll get twice as much loot in 5 years if he keeps is yap shut about it.