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North Korean soldiers and others gather in front of bronze statues of the late leaders Kim Il Sung and Kim Jong Il to pay their respects in Pyongyang, North Korea on Saturday, Feb. 16, 2013. North Koreans turned out to commemorate what would have been the 71th birthday of Kim Jong Il who died on Dec. 17, 2011. (AP Photo/David Guttenfelder)

North Koreans attend a wreath laying ceremony at the Mangyongdae Revolutionary School in Pyongyang on the occasion of birth anniversary of the late leader Kim Jong-Il, which falls on Saturday, in this undated recent picture released by the North's official KCNA news agency on February 16, 2013. REUTERS/KCNA

North Korean leader Kim Jong-Un (4th R) and officials attend a wreath laying ceremony in front of a statue of North's founder Kim Il-Sung and his son and late leader Kim Jong-Il at the Mangyongdae Revolutionary School in Pyongyang on the occasion of birth anniversary of the late leader Kim Jong-Il, which falls on Saturday, in this undated recent picture released by the North's official KCNA news agency on February 16, 2013. REUTERS/KCNA

North Koreans dance to celebrate the birthday of their late leader Kim Jong-il in Pyongyang, in this photo taken and provided by Kyodo February 16, 2013. REUTERS/Kyodo

Offerings of flowers are lined up as North Koreans bow in front of bronze statues of the late leaders Kim Il Sung and Kim Jong Il to pay their respects in Pyongyang, North Korea on Saturday, Feb. 16, 2013. North Koreans turned out to commemorate what would have been the 71th birthday of Kim Jong Il who died on Dec. 17, 2011. (AP Photo/David Guttenfelder)

North Korean soldiers lay flowers at the base of bronze statues of the late leaders Kim Il Sung and Kim Jong Il to pay their respects in Pyongyang, North Korea on Saturday, Feb. 16, 2013. North Koreans turned out to commemorate what would have been the 71th birthday of Kim Jong Il who died on Dec. 17, 2011. (AP Photo/David Guttenfelder)

North Korean children play with the camera of a visiting Associated Press photographer as people gather in front of bronze statues of the late leaders Kim Il Sung and Kim Jong Il in Pyongyang, North Korea on Saturday, Feb. 16, 2013. North Koreans turned out to commemorate what would have been the 71th birthday of Kim Jong Il who died on Dec. 17, 2011. (AP Photo/David Guttenfelder)

North Koreans look at a portrait of late leader Kim Jong-il in Pyongyang, on the occasion of his birthday, in this photo taken by Kyodo February 16, 2013. REUTERS/Kyodo

Rows of North Korean children stand and salute at a sports arena in Pyongyang for a national meeting of the Children's Union on Saturday, Feb. 16, 2013. North Koreans commemorated on Saturday what would have been the 71th birthday of Kim Jong Il who died on December 17, 2011. (AP Photo/Jon Chol Jin)

Korean War veterans tie red bandanas on the necks of students during a national meeting of the Korean Children's Union organization at a sports arena in Pyongyang on Saturday, Feb. 16, 2013. North Koreans commemorated on Saturday what would have been the 71th birthday of Kim Jong Il who died on December 17, 2011. (AP Photo/Jon Chol Jin)

In this Friday, Feb. 15, 2013 photo, North Korean synchronized swimmers perform at a mass synchronized swimming exhibition event in Pyongyang. (AP Photo/David Guttenfelder)

Members of the Mansudae Art Troupe take part in a music and dance performance, titled "Love the Country", at the East Pyongyang Grand Theatre on the occasion of the birth anniversary of North Korea's late leader Kim Jong-Il on February 16, 2013 in this picture taken and released by the North's official KCNA news agency on Saturday. REUTERS/KCNA

South Korean army soldiers patrol along the barbed-wire fence near the border village of Panmunjom, which has separated the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. North Korean defectors and South Korean activists released the 200,000 propaganda leaflets across the border to denounce the North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)

A North Korean defector prepares to release helium balloons carrying leaflets during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of Panmunjom, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They flew the 200,000 propaganda leaflets across the border to denounce the North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)

A South Korean activist shows a defaced portrait of North Korean leader Kim Jong Un before hanging it to helium balloons with leaflets, during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of Panmunjom, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They flew the 200,000 propaganda leaflets across the border to denounce North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)

North Korean defectors and South Korean activists prepare to launch helium balloons carrying leaflets, seen at bottom of balloon, during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of Panmunjom, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They flew the 200,000 propaganda leaflets across the border to denounce the nuclear test and late leader Kim Jong Il's birthday on Saturday. The letters read "Nuclear weapons when starving to death?" (AP Photo/Lee Jin-man)

Helium balloons carrying leaflets against North Korean leader Kim Jong Un and their dictatorship, are launched by North Korean defectors and South Korean activists during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of Panmunjom, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They flew the 200,000 propaganda leaflets across the border to denounce the nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)

South Korean peace activists hold banners during a rally against anti-activists who send the leaflets at the Imjingak Pavilion near the border village of Panmunjom, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. North Korean defectors and activists released 200,000 propaganda leaflets across the border to denounce the North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. The letters read; "Stop, release leaflets." (AP Photo/Lee Jin-man)

Tourists look at a map of railroad between two Koreas at the Imjingak Pavilion, near the border village of Panmunjom, which has separated the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. North Korean defectors and South Korean activists released 200,000 propaganda leaflets across the border to denounce the North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)

A girl looks at a banner as two North Korean defectors prepare to release pictures of North Korean leader Kim Jong Un, his wife Ri Sol Ju and late leader Kim Jong Il, right banner, by hanging its from huge helium balloons during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of the Panmunjom (DMZ) that separates the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They released 200,000 propaganda leaflets across the border to denounce the North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. The letters on left banner read "Nuclear weapons when starving to death?" (AP Photo/Lee Jin-man)

A South Korean activist holds North Korean flags before releasing them with huge helium balloons during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of the Panmunjom (DMZ) that separates the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They released 200,000 propaganda leaflets across the border to denounce the North Korea's third nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)

North Korean defector Park Sang Hak, right, and South Korean activist hold North Korean flags with defaced pictures of leader Kim Jong Un before launching helium balloons during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of Panmunjom in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They flew the 200,000 propaganda leaflets across the border to denounce the nuclear test and late leader Kim Jong Il's birthday on Saturday. The letters read "Punishment, Nuclear weapons and dictatorship. " (AP Photo/Lee Jin-man)

North Korean defectors and South Korean activists prepare to launch ten helium balloons carrying leaflets against North Korean leader Kim Jong Un at its bottoms, during an anti-North Korea rally denouncing North Korea's third nuclear test at the Imjingak Pavilion near the border village of Panmunjom, in Paju, north of Seoul, South Korea, Saturday, Feb. 16, 2013. They flew the 200,000 propaganda leaflets across the border to denounce the nuclear test and late leader Kim Jong Il's birthday on Saturday. (AP Photo/Lee Jin-man)