Reuters Pictures
A man watches a televised news showing file footage of the second Yeonpyeong sea battle between the two Koreas along a disputed sea border in 2002, at the Seoul railway station November 10, 2009. Navies from the rival Koreas exchanged gunfire for the first time in seven years on Tuesday, damaging vessels on both sides and raising tension just days before U.S. President Barack Obama travels to Asia.