3Qs: North Korean nuclear tests challenge US, China

February 19, 2013 Ear­lier this week, North Korea det­o­nated a nuclear weapon that it says brings the secluded nation a step closer to having the capa­bility to attack the United States with a nuclear mis­sile. We asked Suzanne Ogden, a pro­fessor of polit­ical sci­ence and an expert on U.S.-Asian policy, to weigh in on how the test impacts for­eign policy and how nations like the U.S. and China can act to pre­vent fur­ther nuclear proliferation. Read more here.