South Korean protesters shout slogans during a rally against the participation of South Korea in the Weapons of Mass Destruction Proliferation Security Initiative (PSI) at the front Ministry of Foreign Affairs and Trade in Seoul, South Korea, 15 April 2009. South Korea has delayed announcing its participation in a U.S.-led global effort to stop the trafficking of weapons of mass destruction (WMD), a government official said on 15 April. EPA/LEE KI-TAE