
He said a newly completed agreement between Iraq and the Bush administration covering U.S. troops signals "a transition period in which our mission is changing." He added: "It indicates we are now on a glide path to reduce our forces in Iraq."
Obama has now selected half his Cabinet, including the high-profile jobs at State, Defense, Justice and Treasury. A week ago, he named his economic team, led by Timothy Geithner as treasury secretary. And soon he plans to announce New Mexico Gov. Bill Richardson as commerce secretary and former Senate Majority Leader Tom Daschle as health and human services secretary.
Obama's picks suggest he is mindful of his own relative inexperience; most of the appointees have decades more experience in government than he does as a former one-term Illinois senator. The selections also reflect his long-voiced desire to invite divergent viewpoints to chart the best course for the country.
"I assembled this team because I'm a strong believer in strong personalities and strong opinions," he said. "I think that's how the best decisions are made. ... So I'm going to be welcoming a vigorous debate inside the White House."
"But understand I will be setting policy as president," he added. He said he will be responsible for "the vision that this team carries out, and I expect them to implement that vision once decisions are made."
Quoting Harry S. Truman, Obama said: "The buck will stop with me."
"The time has come for a new beginning, a new dawn of American leadership to overcome the challenges of the 21st century," Obama said.
Without naming Bush or directly referring to what administration critics see as America's tarnished world image over the past eight years, Obama called for a new strategy for dealing with global issues.
"We're going to have to bring the full force of our power, not only military but also diplomatic, economic, and political, to deal with those threats not only to keep America safe but also to ensure that peace and prosperity will exist around the world," he said.