inputs: hypothesis: Charles Haviland is an American citizen. premise: We knew there were restrictions on video cameras and satellite phones but we're now told even pre-recorded radio material on non-political subjects would not be allowed, said BBC reporter Charles Haviland on the incident. This move comes after an American was forced off the mountain after being discovered with a Tibetan flag. These are not permitted on the Tibetan side of the mountain. A Nepali official aimed to justify the new restriction. "We are doing this for our friend China," he said.