Former U.S. national security adviser Brzezinski dies at 89

Zbigniew Brzezinski, who served as U.S. President Jimmy Carter's national security adviser during the Iran hostage crisis and the Soviet invasion of Afghanistan and drove a normalization of relations with China, has died.Brzezinski's daughter Mika, a host on MSNBC's "Morning Joe" show, said her father died peacefully on Friday.Brzezinski, the hawkish son of a Polish diplomat, was national security adviser for all four years of the 1977-81 Carter presidency.