[JBird]

Well, if you look back in time, Tony Stark was captured by Vietnamese terrorists. Why both the Vietnamese (back then) and the current terrorists didn't bother check up on a guy they thought was still injured due to a piece of shrapnel tearing his heart? I don't know. You tell me. Maybe, just maybe, they thought he wouldn't be capable of building a super suit. Like something of that caliber was unthinkable. Impossible, even.



Its a comic book movie, so its best not to think too hard them.