
Police officers patrol near houses destroyed by North Korean shelling on the Yeonpyeong Island, South Korea, Friday, Nov. 26, 2010. North Korea warned Friday that planned U.S.-South Korean military drills are pushing the peninsula to the brink of war. (AP Photo/Lee Jin-man)
South Korean Defense Minister Kim Tae-young prepares to place a flower at the altar during a memorial service for South Korean Marines at a military hospital in Seongnam, South Korea, on Thursday. The Marines were killed in a North Korean artillery barrage on the South Korean border island of Yeonpyeong. Mr. Kim resigned on Thursday, two days after the artillery attack by North Korea killed four people on the small island near the disputed border. (Associated Press)

South Korean marines collect an unexploded shell fired from North Korea into a straw bag on Yeonpyeong island, South Korea, Thursday, Nov. 25, 2010. (AP Photo/Yonhap, Park Ji-ho)
An unidentified relative of Seo Jeong-woo, a South Korean marine killed on Yeonpyeong Island by North Korea's artillery attack, weeps during a memorial service at a military hospital Wednesday. (Associated Press)

A South Korean protester burns a North Korean flag during a rally in Seoul Wednesday, Nov. 24, 2010, against North Korea's attack on Yeonpyeong island. (AP Photo/Bang Sung-hae)

An aerial view shows destroyed houses on Yeonpyeong island, South Korea, Wednesday, Nov. 24, 2010, one day after North Korea's artillery attack on the island. Rescuers found the burned bodies Wednesday of two islanders killed in the attack _ the first civilian deaths from a skirmish that marked a dramatic escalation of tensions between the rival Koreas. (AP Photo/Yonhap, Kim Hyun-tae)

South Korean soldiers carry an injured man upon arrival from the island of Yeonpyeong at a military port in Incheon, west of Seoul, South Korea, Wednesday, Nov. 24, 2010. South Korea's troops were on high alert Wednesday as their government exchanged threats with rival North Korea following a frightening military skirmish that ratcheted tensions on the peninsula to new extremes. (AP Photo/ Lee Jin-man)

An unidentified family member of Seo Jeong-woo, a South Korean Marine who was killed on South Korean Yeonpyeong Island by North Korea's artillery attack, weeps during a memorial service at a military hospital in Seongnam, South Korea, Wednesday, Nov. 24, 2010. South Korea said Wednesday the burned bodies of two male civilians found on the island, marking the first civilian deaths in the incident. (AP Photo/Yonhap, Shin Young-gun)

South Korean survivors arrive as they are surrounded by relatives and media at a port in Incheon, west of Seoul, South Korea, Wednesday, Nov. 24, 2010. South Korea's troops were on high alert Wednesday as their government exchanged threats with rival North Korea following a frightening military skirmish that ratcheted tensions on the peninsula to new extremes. (AP Photo/ Lee Jin-man)