BBC: Bolton out at UN
BBC NEWS: Controversial US envoy quits post: "The controversial US ambassador to the United Nations, John Bolton, is to leave his post, the White House says.
Mr Bolton looked unable to win the necessary Senate support for him to continue in the job, which he had obtained on a temporary basis.
Critics have questioned factors including his abrasive style at the UN.
Mr Bolton's move comes after US defence chief Donald Rumsfeld resigned following the Republican defeat in last month's mid-term elections.
The incoming chairman of the Senate Foreign Relations Committee, Democratic Senator Joe Biden, said he saw 'no point in considering Mr Bolton's nomination again'.
The White House said President George W Bush had 'reluctantly' accepted Mr Bolton's move to step down at the end of the current Congress session in January."