As he prepared to step down as secretary of state in 1996, Christopher said his proudest accomplishments included helping promote a ban on nuclear weapons tests.

A law firm spokeswoman says former Secretary of State Warren Christopher, who worked for peace in Bosnia and the Mideast in the Clinton administration, has died in Los Angeles.

Spokeswoman Sonja Steptoe from law firm O’Melveny & Myers where Christopher was a senior partner says he died at his home on Friday night of complications from bladder and kidney cancer. He was 85.

As he prepared to step down as secretary of state in 1996, Christopher said his proudest accomplishments included helping promote a ban on nuclear weapons tests.

He also tried to foster peace in the Middle East, without much success. He was more successful in the negotiations that produced a settlement in 1995 for Bosnia.

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