A big shakeup in America's national security leadership is coming later this week.
Anonymous administration sources have told the Associated Press that current Central Intelligence Agency Director Leon Panetta will replace Robert Gates as defense secretary.
The changes will likely take place this summer. Gates is expected to step down from his post this year. Sources said President Obama wants Panetta to take over the Defense Department.
A U.S. official who confirmed Panetta's move to the Pentagon said the White House chose him because of his long experience in Washington, including working with budgets at the intelligence agency, as well as his extensive experience in the field during his time as CIA director.
The official said Panetta had traveled more than 200,000 miles, to more than 40 CIA stations and bases and more than 30 countries, including Afghanistan and Pakistan.
It's also likely that Lt. Gen. David Petraeus will leave his role in Afghanistan to succeed Panetta as head of the CIA.
Current and former administration officials noted that Petraeus would bring a customer's eye to the job as one of the key people to use and understand CIA and military intelligence during the wars in Afghanistan and Iraq.
The sources said Obama is expected to also announce that Lt. Gen. John Allen would replace Petraeus as Afghanistan commander, and that diplomat Ryan Crocker will be the next U.S. ambassador in Afghanistan.
Allen, now the deputy commander of U.S. Central Command in Florida, is due in Washington on Wednesday, and sources in Afghanistan said Petraeus was also heading there. Allen has never served in Afghanistan.
The changes aren't finalized yet. An official announcement is expected from the White House on Thursday.