Yesterday President Obama took to the international stage as he made his United Nations debut. From yesterday's climate change summit to tomorrow's nuclear disarmament talk ? and anticipated flourishes from Iran's President Mahmoud Ahmadinejad and Libya's Muammar Gaddafi along the way ? we take a look at President Obama's global positioning with worldly thinkers Richard Wolffe and Reihan Salam. Richard Wolffe is a journalist and author of the bestselling book "Renegade: The Making of a President." Reihan Salam is a fellow at the New America Foundation and editor of The American Scene.