BERLIN - U.S. presidential candidate Barack Obama will restore Washington's credibility in the world if elected, former U.S. Senate Democratic leader Tom Daschle said Wednesday.

Obama "would return to the days of aggressive multilateralism … and work in concert with our friends and allies," Daschle, a top adviser to the Obama presidential campaign, told reporters in Berlin.

"Barack Obama believes its very important for us to restore our standing around the world, that the American people have lost some of our good will and the credibility that we once had - in part because of the practices and policies of the Bush administration," said Daschle, a former South Dakota senator who lost his bid for re-election in 2004.

"He would like to restore our credibility, restore our standing, create the kind of multilateral approach to addressing international policy that we once used to use."

Daschle said one of Obama's top foreign policy priorities would be to change policy in Iraq and to start withdrawing troops.

"We can no longer afford the loss of life and the tremendous financial commitment that we have made," Daschle said. "We have to transition to a larger effort in Afghanistan and around the world and recognize that the time has come for Iraq to govern and to take on these challenges, with the help of others, of course, but not just with the United States."

Other foreign policy issues that are important to Obama include climate protection, and a return to "the international rule of law," Daschle said.

"He would close Guantanamo tomorrow if he could."