Warren Christopher, Bill Clinton's first secretary of state, dies at the age of 85

Tributes paid to the 'diplomat's diplomat', who quietly and doggedly negotiated the release of American hostages in Tehran Bill Clinton's first secretary of state, Warren Christopher, has died at the age of 85 after a career of quiet heroism in which he helped bring peace to the Balkans and resolve the Tehran hostage crisis through dogged negotiation. Christopher, who died at home in California