1. Go through YOUR Air Force and apply.
or
2. Renounce your citizenship; apply to be a U.S. Citizen; be under 23 years old and apply
I have met many international students at the academy. One was my son's roommate and is from Madagascar. THEIR Military has/makes openings with the American academies; then that country chooses their individuals to be a student. Now, there might be some different protocols with different countries; so again, I recommend you contact YOUR Air Force and ask them.