His daughter Mika Brzezinski wrote on Instagram, Censor.NET reports.
''My father passed away peacefully tonight. He was known to his friends as Zbig, to his grandchildren as Chief and to his wife as the enduring love of her life. I just knew his as the most inspiring, loving and devoted father any girl could ever have,'' she wrote.
Brzezinski was a Polish-American diplomat and political scientist. He served as a counselor to President Lyndon B. Johnson from 1966 to 1968 and was President Jimmy Carter's National Security Advisor from 1977 to 1981.