United States' Rachel Buehler is congratulated by her teammate United Alex Krieger after scoring their side's 2nd goal during the group C match between the United States and North Korea at the Women’s Soccer World Cup in Dresden, Germany on Tuesday. (AP Photo/Marcio Jose Sanchez)
A limousine believed to be carrying North Korean leader Kim Jong-il drives ahead of a convoy of cars traveling toward the Great Hall of the People in Beijing on Wednesday, May 25, 2011. Mr. Kim reportedly arrived in Beijing on Wednesday for a meeting with Chinese President Hu Jintao that would highlight the influence that economic powerhouse China has with the isolated regime, which is struggling to feed its people. (AP Photo/Ng Han Guan)
North Korean leader Kim Jong-il (second from right) leaves a hotel in Mudanjiang in northeastern China on Friday, May 20, 2011. Mr. Kim, who rarely travels abroad, made an unusual third trip in just more than a year to China, his country's main ally and benefactor, news agencies reported. (AP Photo/Kyodo News)
A protester holds a sign with a photo of Stephen Bosworth, U.S. special envoy for North Korea policy, as others shout slogans during a rally demanding the resumption of peace talks between the two Koreas and six-party talks, in Seoul on Tuesday, May 17, 2011. The placard reads, "Start the meeting between two Koreas and six-party talks." (AP Photo/Lee Jin-man)
South Korean soldiers take part in a civil defense drill against possible North Korea's attack in Seoul on Tuesday, March 15, 2011. North Korea told a Russian envoy that it is willing to discuss its newly disclosed uranium enrichment program if long-stalled nuclear disarmament talks resume, state media reported Tuesday. (AP Photo/Bang Seung-hae)
**FILE** South Korean activists and defectors from North Korea release balloons with the words "Overthrow Kim Jong-il Dictatorship" in Korean and with leaflets condemning the North Korean leader during a rally at the Imjingak pavilion near the border village of Panmunjom, South Korea, on Feb. 16, the North's national holiday celebrating Mr. Kim's birthday. (Associated Press)
'DEAR LEADER': An image of North Korea's designated leader-to-be, Kim Jong-un (center), is shown on a screen during a performance celebrating the 69th birthday of Mr. Kim's father and current leader, Kim Jong-il. Outside information is increasingly penetrating into the secretive state. (Kyodo News via Associated Press)
A South Korean television station airs a program about North Korean leader Kim Jong-il's birthday, seen on a TV screen at the North Korea exhibition hall of the unification observation post in Paju, South Korea, near the border village of Panmunjom, on Tuesday, Feb. 15, 2011. North Koreans will celebrate their leader's 69th birthday Wednesday, one of the country's most important holidays. The screen reads "Magnificent, Birthday Party" in the Korean language. (AP Photo/Lee Jin-man)
North Korean refugee Lee Dong-woon, 82, left center, and his family members pay to respect for their ancestors in North Korea in front of the barbed wire fence as they celebrate the Lunar New Year at the Imjingak Pavilion, near the demilitarized zone of Panmunjom, in Paju, South Korea, Thursday, Feb. 3, 2011. About 32 million people will visit their hometowns during the five-day holiday that begins Wednesday. (AP Photo/Ahn Young-joon)
** FILE ** Stephen Bosworth, the U.S. special envoy for North Korea, talks to the media after meeting with South Korean officials at the Foreign Ministry in Seoul on Wednesday, Jan. 5, 2011. (AP Photo/Ahn Young-joon)
Tens of thousands of North Koreans attend a New Year's rally to display loyalty to leader Kim Jong-il in the central Kim Il-sung Square in Pyongyang, North Korea, on Monday, Jan. 3, 2011. (AP Photo/APTN)
South Korean President Lee Myung-bak looks at North Korea through binoculars Thursday from Yanggu, north of Seoul, as his army and air force staged their largest firing drills of the year.
South Korean Ahyeon Middle School students take shelter at a subway station in Seoul on Wednesday during a simulated attack by North Korea. Their signs read, "A shelter for the 5th class of 3rd grade."
Japanese Foreign Minister Seiji Maehara (left), Secretary of State Hillary Rodham Clinton and South Korean Foreign Minister Kim Sung-hwan observe a moment of silence for the victims of the latest attacks in South Korea by North Korea before the start of their trilateral meeting at the State Department on Monday. (Associated Press)