Zbigniew Brzezinski, the national security adviser to President Jimmy Carter, has died aged 89.
His death was announced on social media by his daughter, MSNBC host Mika Brzezinski, but she did not give the cause of his death.
She described him as “the most inspiring, loving and devoted father any girl could ever have”.
Mr Brzezinski served in President Carter’s administration from 1977 to 1981.
He helped topple economic barriers between the Soviet Union, China and the West and helped Mr Carter bridge gaps between the leaders of Egypt and Israel, leading to the Camp David accords.
But the Carter years were also defined by the Iranian hostage crisis, which came to symbolise the administration’s failures and frustrations.
In recent years, Mr Brzezinski took part in proceedings designed to bring the former Soviet republics into NATO.
After his Carter years, Mr Brzezinski became a consultant on international affairs and a senior adviser for the Georgetown Center for Strategic and International Studies in Washington.
He also taught American foreign policy at Johns Hopkins University.
He frequently wrote opinion articles for newspapers and published several books, including ‘Strategic Vision: America and the Crisis of Global Power’ in 2012.
(c) Sky News 2017: Carter’s national security adviser Zbigniew Brzezinski dies