Iran hostage crisis
Throughout 1960s, Brzezinski worked for John F. Kennedy as his advisor and then the Lyndon B. Johnson administration. During the 1976 selections he advised Carter on foreign policy, then served as National Security Advisor (NSA) from 1977 to 1981, succeeding Henry Kissinger. As NSA, he assisted Carter in diplomatically handling world affairs, such as the Camp David Accords, 1978; normalizing US–China relations thought the late 1970s; the Iranian Revolution, which led to the 
, 1979; and the Soviet invasion in Afghanistan, 1979.
Former U.S. National Security Advisor Zbigniew Brzezinski dies aged 89