By using his Nobel Peace Prize acceptance speech Thursday to justify expanding the U.S.-led war in Afghanistan, President Barack Obama won over some Republican critics at home, even as he preached messages of multilateralism, diplomacy and civil disobedience that resonate in anti-war circles around the world.

In a 36-minute speech in Oslo, Obama defended last week's announcement that he'll send 30,000 to 35,000 more troops to Afghanistan. He discouraged other nations' "reflexive suspicion of America," recalling how Europe survived thanks to U.S. intervention in World War II. He spoke of "just war."