While his efforts with Syria didn't bear fruit, he was more successful in the negotiations that produced a settlement in 1995 for Bosnia, ending a war among Muslims, Serbs and Croats that claimed 260,000 lives and drove another 1.8 million people from their homes.
Some critics said the administration had moved too slowly against the ethnic violence. Then-Congressman Frank McCloskey, an Indiana Democrat, called for Christopher's resignation and virtually accused the administration of ignoring genocide against Bosnian Muslims. A handful of State Department officials resigned in protest.
While Christopher often preferred a behind-the-scenes role, he also made news as deputy secretary of state in the Carter administration, conducting the tedious negotiations that gained the release in 1981 of 52 American hostages in Iran.
Christopher also chaired a commission that proposed reforms of the Los Angeles Police Department in the aftermath of the videotaped beating by police of motorist Rodney King in 1991. When four officers arrested for beating King were acquitted of most charges the following year Los Angeles erupted in days of deadly rioting.