Short of (rapidly outdated, since not updateable) unlocked devices or (insanely expensive) international roaming on a carrier contract from another country, there is no way of getting an iphone and getting it to work in places where no carrier has them yet (which does not limit you to the US/AT&T, though, several European carriers will be selling them in time for X-mas, and might have cheaper roaming charges in Israel than AT&T).

Sevo