Updated: 15:10, Monday December 04, 2006
John Bolton, President Bush's controversial appointment as US ambassador to the United Nations, has resigned.
His departure had looked likely since the Democrats took control of Congress in the US midterm elections.
Mr Bush had braved political opposition to give him him the job temporarily in August last year.
His confirmation has been languishing in the Senate Foreign Relations Committee ever since.
The no-nonsense Bush ally was opposed by Democrats and some Republicans. He was accused of trying to intimidate intelligence analysts into supporting his hawkish views while at the State Department.
Critics have also pointed to his brusque and uncompromising style and questioned whether he was the man to lead reform of the United Nations.
The White House has now announced that Mr Bolton would leave office in a matter of days.
Spokeswoman Dana Perino said Mr Bush had reluctantly accepted Mr Bolton's decision to leave the UN post when the current session of the US Congress ends, probably at the end of the week.
She blamed his exit on the Democrats.
She said: "Despite the support of a strong bipartisan majority of Senators, Ambassador Bolton's confirmation was blocked by a Democrat filibuster, and this is a clear example of the breakdown in the Senate confirmation process."
Sky's US correspondent Andrew Wilson said that independent Senator Joe Lieberman - who stood unsuccessfully as a Vice-Presidential candidate - was a possible replacement.
The former Democrat could be an acceptable compromise candidate.
Source: Sky News
Was this realy a surprise to anyone?