As it now appears that you are spineless, and have too long taken the protection and aid of the United States, on which you depend for national defense, for granted, and indeed have bitten the very hand that feeds you, we have decided to revoke your missile defense shield. This means that Iran can attack you, but not us. Good luck with the Ayatollah, I hear he's a really reasonable guy once you convert, and may the last thing you see before you are incinerated in a manner befitting the movie Terminator 2 be the contrails of our missile defense system protecting us. You see, if there's anything history's taught us, it's that hubris always wins out in the end.

Sincerely,
The United States Department of Defence

PS: Good luck, basically you're screwed.