Challenges for President Obama on Asia trip

President Obama takes off for an eight-day trip to Asia tonight. He’ll visit Seoul, Singapore and spend three days in China, where the agenda will include some of the biggest global challenges of the day: global warming, the economy and nuclear proliferation. But his first destination is Tokyo, where he’ll meet with new Japanese Prime Minister Yukio Hatoyama, who has recently called for a more ?equal? relationship with the United States. We speak to Kenneth Lieberthal, director of the John L. Thornton China Center at the Brookings Institution; along with Martin Fackler, Tokyo bureau chief for our partner, The New York Times.