Anti-North Korea and pro-U.S. protesters chant slogans at a rally in Seoul November 11, 2009. The Obama administration will send its first envoy to North Korea to try to revive dormant nuclear disarmament talks, just as tension has heightened on the Korean peninsula after Tuesday's naval clash between the two Koreas. A sign (C, top) reads, "Punish strongly North Korea's provocation on the Northern Limit Line (NLL)!" REUTERS/Lee Jae-Won
(SOUTH KOREA MILITARY CONFLICT)