Winds of War
The vice-president, Dick Cheney, has long favoured upping the threat of military action against Iran. He is being resisted by the secretary of state, Condoleezza Rice, and the defence secretary, Robert Gates.
Last year Mr Bush came down in favour of Ms Rice, who along with Britain, France and Germany has been putting a diplomatic squeeze on Iran. But at a meeting of the White House, Pentagon and state department last month, Mr Cheney expressed frustration at the lack of progress and Mr Bush sided with him. "The balance has tilted. There is cause for concern," the source said this week.
The balance in the internal White House debate over Iran has shifted back in favour of military action before President George Bush leaves office in 18 months, the Guardian has learned.