WASHINGTON (Reuters) - President Barack Obama sought on Saturday to cast himself as a strong leader on foreign policy, highlighting a U.S. pullout from Iraq and the death of Libyan leader Muammar Gaddafi as success stories. In a message Obama is likely to push in his 2012 re-election campaign, he said his leadership had made it possible to turn the page on a decade of war and refocus on bolstering the U.S. economy and paying down the national debt. Obama said in his weekly radio and Internet address that Gaddafi's death and the announcement that all U.S. troops would be removed from Iraq this year were "powerful reminders of how we've renewed American leadership in the world."