52 Americans who were being held hostages in Iran in 1981
Christopher's career as a US diplomat spanned almost 28 years, with him serving under President Lyndon B. Johnson as deputy Attorney General, before entering the diplomatic field as deputy Secretary of State under the Presidency of Jimmy Carter. While working for Carter, Christopher earned his reputation as a negotiator, securing the release of 
, an act that earned him the most prestigious civilian award in the US, the Presidential Medal of Freedom.
Ex US Secretary of State Warren Christopher dead aged 85