North Korean leader Kim Jong-Un (C) visits the Wolnae Islet Defence Detachment in the western sector of the front line, which is near Baengnyeong Island of South Korea March 11, in this picture released by the North's official KCNA news agency in Pyongyang March 12, 2013. South Korea and U.S. forces are conducting large-scale military drills, while the North is also gearing up for a massive military exercise. North Korea has accused the U.S. of using the military drills in the South as a launch pad for a nuclear war and has said to scrap the armistice with the U.S. that ended the 1950-53 Korean War.

In this March 11, 2013 photo released by the Korean Central News Agency (KCNA) and distributed March 12 by the Korea News Service, North Korean leader Kim Jong Un, third left, looks at South's western border island of Baengnyeong during his visit to the Wolnae Islet Defense Detachment, North Korea. North Korea's young leader urged front-line troops to be on "maximum alert

In this March 11, 2013 photo released by the Korean Central News Agency (KCNA) and distributed March 12 by the Korea News Service, North Korean leader Kim Jong Un, center, confers with military officers at a long-range artillery sub-unit of KPA Unit 641 during his visit to front-line military units near the western sea border in North Korea near the South's western border island of Baengnyeong. Kim urged front-line troops to be on "maximum alert" for a potential war as a state-run newspaper said Pyongyang had carried out a threat to cancel the 1953 armistice that ended the Korean War.

North Korean leader Kim Jong-Un waves while in a boat during his visit to the Wolnae Islet Defence Detachment in the western sector of the front line, which is near Baengnyeong Island of South Korea March 11, in this picture released by the North's official KCNA news agency in Pyongyang March 12, 2013. South Korea and U.S. forces are conducting large-scale military drills, while the North is also gearing up for a massive military exercise. North Korea has accused the U.S. of using the military drills in the South as a launch pad for a nuclear war and has said to scrap the armistice with the U.S. that ended the 1950-53 Korean War.

North Korean leader Kim Jong Un hugs former NBA player Dennis Rodman following a basketball game between the Harlem Globetrotters and North Korean University of Physical Education in Pyongyang, North Korea, on Feb. 28.

North Korean synchronized swimmers perform at a mass synchronized swimming exhibition event in Pyongyang on on Feb. 15.

Young North Korean synchronized swimmers perform at an exhibition event in Pyongyang on on Feb. 15.

Executive Chairman of Google, Eric Schmidt, right, tries on 3-D glasses as he looks at North Korean-developed computer technology during a tour of the Korean Computer Center in Pyongyang, North Korea on Jan. 9. At left is Kun "Tony" Namkung, a North Korea's expert and member of the traveling delegation.

Eric Schmidt, back row left, and former Governor of New Mexico Bill Richardson, back row right, look at North Korean soldiers working on computers at the Grand Peoples Study House in Pyongyang, North Korea on Jan. 9.

Eric Schmidt, second from left, and former Governor of New Mexico Bill Richardson, second from right, look through an information technology text book at the Grand People's Study House in Pyongyang, on Jan. 9. At left is director of Google Ideas think tank, Jared Cohen. The textbook is titled "Aries Net Certified Technician First Edition Version 3.0."

North Koreans bow before the statues of late leaders Kim Il Sung, left, and his son Kim Jong Il, at Mansu Hill in Pyongyang, North Korea, on Dec. 17.

North Korean leader Kim Jong Un, right, attends a ceremony to reopen the Kumsusan Palace of the Sun in Pyongyang, North Korea, on Monday, Dec. 17, 2012. Kim solemnly reopened the sprawling, granite mausoleum where his father's body lies in state as the nation marked the first anniversary of his death.

North Koreans visit the statues of late North Korean leaders Kim Il Sung, left, and Kim Jong Il to offer a silent prayer in central Pyongyang on Dec. 17. Picture released by the North's official KCNA news agency.

A North Korean traffic coordinator stands on a roadside near portraits of late leaders Kim Il Sung, left, and Kim Jong Il during a foggy morning on Kim Il Sung Square in Pyongyang, on Dec. 17.

North Korean officials attend a memorial service for former leader Kim Jong Il in Pyongyang on Dec. 16 ahead of the first anniversary of his death.

North Koreans attend a rally to celebrate the successful launch of the Unha-3 (Milky Way 3) rocket, which carried the second version of the Kwangmyongsong-3 satellite, in Pyongyang on December 14, 2012.

Kim Jong-Un smokes a cigarette at the General Satellite Control and Command Center after the launch of the Unha-3 (Milky Way 3) rocket in Cholsan county, North Pyongan province on December 12, 2012.
EDITOR'S NOTE: Photo released by the state-run North Korean Central News Agency (KCNA) on December 14.

North Korean leader Kim Jong Un celebrating with staff members at the Pyongyang General Satellite Control Command Center after the successful launch of the Kwangmyongsong-3 satellite on December 12, 2012.
EDITOR'S NOTE: Photo released by the state-run North Korean Central News Agency (KCNA) on December 14.

North Korean soldiers attend a rally to celebrate the successful launch of the rocket, in Pyongyang on December 14, 2012.

North Korean military band members perform during a mass rally organized to celebrate the success of a rocket launch at Kim Il Sung Square in Pyongyang on Dec. 14, 2012.

North Koreans applaud in front of portraits of North Korea's founder Kim Il-sung (L) and late leader Kim Jong-il as they gather at a rally in Pyongyang on December 14, 2012.

People watch a dolphin show at a newly-built amusement park in Pyongyang, North Korea on Sept. 8.

A dolphin leaps from a tank during a show at a newly-built amusement park in Pyongyang, North Korea on Sept. 8.

A woman rides a roller coaster at a newly-built amusement park in Pyongyang, North Korea on Aug. 8.

A guest room is bathed in red light shining through a curtain at a hotel for foreign tourists in Kaesong, North Korea on Sept. 11.

A traffic police officer stands in a marked area in the middle of the principle intersection in Kaesong, North Korea on Sept. 11.

A truck, retrofitted to run on a barrel of burning wood, stops on a road in Hamhung, North Korea on Aug. 11.

A man holds a woman's bag and parasol as they play miniature golf at a newly-built amusement park in Pyongyang, North Korea on Sept. 8.

Two people dance at Majon beach near Hamhung, North Korea on Aug. 11.