South Korea suspended trade with North Korea after an investigation concluded North Korea torpedoed a South Korean navy ship killing 46 sailors. From Beijing, Secretary of State Clinton urged China to join in decisive action to respond to this "provocative action" and North Korea declared it is cutting off all ties with the South. Shorenstein Asia-Pacific Research Center Director Gi-Wook Shin discusses the issues with KQED's Michael Krasny and other experts.