1/13North Korean children hold up red scarves to be tied around their necks during an induction ceremony into the Korean Children's Union held at a stadium in Pyongyang, April 12, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
2/13Two military officers admire displays at a flower show featuring thousands of Kimilsungia flowers, named after the late North Korean leader Kim Il Sung, Pyongyang, April 12, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
3/13South Korean soldiers stand guard at an observation post near the demilitarized zone (DMZ) which separates the two Koreas in Paju, north of Seoul April 11, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
4/13Female North Korean soldiers patrol along the banks of Yalu River, near the North Korean town of Sinuiju, opposite the Chinese border city of Dandong, April 11, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
5/13A North Korean man blocks his face with his hand from being photographed as he and other residents take a ferry in Yalu River, near the North Korean town of Sinuiju, opposite the Chinese border city of Dandong, April 11, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
6/13People take part in an oath-taking before the statues of late North Korean leaders Kim Il-sung and Kim Jong-il on Mansudae Hill in Pyongyang, April 10, 2013. (KCNA)
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
7/13Anti-North Korean protesters release balloons with peace messages on the Grand Unification Bridge leading to the North near the demilitarized zone separating the two Koreas, in Paju, north of Seoul, April 10, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
8/13South Koreans arrive with their belongings from North Korea's Kaesong at the customs, immigration and quarantine office near the border village of Panmunjom, in Paju, north of Seoul, South Korea, April 9, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
9/13Visitors look at the industrial complex in Kaesong, North Korea, through binoculars at Dora Observation Post in the demilitarized zone (DMZ) near the border village of Panmunjom, in Paju, South Korea, April 9, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
10/13A South Korean military vehicle passes by gates leading to the North Korean city of Kaesong at the customs, immigration and quarantine office near the border village of Panmunjom, April 8, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
11/13An elementary school teacher orders her students to leave as they watch South Korean housewives denounce annual South Korean-U.S. military exercises, near the U.S. Embassy in Seoul, April 8, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
12/13South Korean army soldiers patrol along a barbed-wire fence near the border village of the Panmunjom, in Paju, South Korea, April 8, 2013.
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
13/13North Korean military dogs run to a target with a portrait of South Korean Defence Minister Kim Kwan-jin during a military drill, April 6, 2013. (KCNA)
U.S. Secretary of State John Kerry says it would be a "huge mistake" if North Korea follows through on its threat to conduct another missile test that officials warn could happen at any time.
