Fang Lizhi
Fang and his wife remained in the US Embassy until 25 June 1990, when they were allowed by Chinese authorities to leave the embassy and board a U.S. Air Force C-135 transport plane to Britain. This resolution partly came about after confidential negotiations between Henry Kissinger, acting on behalf of US President George H.W. Bush, and China's paramount leader Deng Xiaoping. Other factors were a false confession by Fang, an attempted intervention by US National Security Adviser Brent Scowcroft, and an offer from the Japanese government to resume loans to the PRC in return for the resolution of "the Fang Lizhi problem."