List of border incidents involving North and South Korea
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The following is a list of border incidents involving North and South Korea since the Korean Armistice Agreement of July 27, 1953, ended large scale military action of the Korean War. Most of these incidents took place near either the Korean Demilitarized Zone or the Northern Limit Line. This list includes engagements on land, air, and sea, but does not include alleged incursions and terrorist incidents that occurred away from the border. A total of 3,693 armed North Korean agents have infiltrated into South Korea between 1954 and 1992, with 20% of these occurring between 1967 and 1968.
Many of the incidents occurring at sea are due to border disputes. In 1977 North Korea claimed an Exclusive Economic Zone over a large area south of the disputed western maritime border, the Northern Limit Line in the Yellow Sea. This is a prime fishing area, particularly for crabs, and clashes commonly occur, which have been dubbed the "Crab Wars". As of January 2011, North Korea had violated the armistice 221 times, including 26 military attacks.
There were also incursions into North Korea. In 1976, in now-declassified meeting minutes, U.S. Deputy Secretary of Defense William Clements told Henry Kissinger that there had been 200 raids or incursions into North Korea from the south, though not by the U.S. military. Details of only a few of these incursions have become public, including raids by South Korean forces in 1967 that had sabotaged about 50 North Korean facilities.
- 16 February 1958: North Korean agents hijack a South Korean airliner to Pyongyang en route from Busan to Seoul; 1 American pilot, 1 American passenger, 2 West German passengers, and 24 other passengers were released in early March, but 8 other passengers remained in the North.
- 1964: North Korea creates an underground group: Revolutionary Party for Reunification, this group is ground down and eliminated by South Korean authorities by 1969.
- April 27, 1965: Two North Korean MiG-17s attack a United States Air Force RB-47 Stratojet reconnaissance plane above the Sea of Japan, 80 km (50 mi) from the North Korean shore. The aircraft was damaged, but managed to land at Yokota Air Base, Japan.
- October 1966–October 1969: The Korean DMZ Conflict, a series of skirmishes along the DMZ, results in 43 American, 299 South Korean and 397 North Korean soldiers killed.
- January 19, 1967: the ROKS Dangpo (PCEC-56) (formerly the USS Marfa (PCE-842)), is sunk by North Korean coastal artillery north of the NLL, 39 sailors of the crew of 79 are killed.
- January 17, 1968: In an incident known as the Blue House Raid, a 31-man detachment from the Korean People's Army secretly crosses the DMZ on a mission to kill South Korean President Park Chung-hee on January 21, nearly succeeding. The incursion was discovered after South Korean civilians confronted the North Koreans and informed the authorities. After entering Seoul disguised as South Korean soldiers, the North Koreans attempt to enter the Blue House (the official residence of the President of South Korea). The North Koreans are confronted by South Korean police and a firefight ensued. The North Koreans fled Seoul and individually attempted to cross the DMZ back to North Korea. Of the original group of 31 North Koreans, 28 were killed, one was captured, and two are unaccounted for. Additionally, 26 South Koreans were killed and 66 were wounded, the majority of whom were soldiers and police officers. Three American soldiers were also killed and three were wounded.
- January 23, 1968: The United States Navy intelligence ship USS Pueblo is attacked by North Korean naval forces employing Soviet-built DPRK fast patrol boats and is subsequently boarded and captured, along with its crew, in the Sea of Japan. The entire crew of 83 is captured, with the exception of one sailor killed in the initial attack on the vessel, and the vessel was taken to a North Korean port. Tortured during their imprisonment, all the captives were released on December 23 of the same year via the Bridge of No Return at the DMZ. The USS Pueblo is still in North Korean possession and docked in Pyongyang on display as a museum ship.
- From March 1968 and March 1969, various military skirmishes took place in the Paektusan region between the North Korean and Chinese armed forces.
- October 30, 1968: From October 30 to November 2, 120 to 130 North Korean commandos land on the northeast shore of South Korea, allegedly to establish a base in order to wage a guerrilla war against the South Korean government. A total of 110 to 113 were killed, seven were captured, and 13 escaped. Around 20 South Korean civilians, law enforcement officers, and soldiers were killed.
- March 1969: Six North Korean commandos kill a South Korean police officer near Jumunjin, Gangwon-do. Seven American soldiers are killed in a North Korean attack along the DMZ.
- April 15, 1969: A U.S. Navy EC-121M Warning Star reconnaissance aircraft is shot down 90 miles (140 km) in international waters east of the North Korean coast, leaving 31 dead.
- November 1969: Four US soldiers are killed by North Koreans in the Demilitarized Zone.
- December 11, 1969: North Korean agent Cho Ch'ang-hǔi hijacked a Korean Air Lines YS-11 flying from Gangneung Airbase in Gangneung, Gangwon-do to Gimpo International Airport in Seoul. It was carrying four crewmembers and 46 passengers (excluding Cho); 39 of the passengers were returned two months later, but the crew and seven passengers remained in North Korea. The aircraft was damaged beyond repair on landing.
- April 1970: At Kumchon, Gyeonggi-do, a clash leaves three North Korean infiltrators dead and five South Korean soldiers wounded.
- June 1970: The North Korean Navy seizes a broadcast vessel from the South near the Northern Limit Line. 20 crew are captured.
- February 1974: Two South Korean fishing vessels are sunk and 30 crew detained by the North.
- 1974: The first North Korean infiltration tunnel into ROK is discovered. Three following tunnels were found in 1975, 1978, 1990. The joint ROK-U.S. investigation team trip a North Korean booby-trap, killing one American and wounding 6 others.
- March 1975: The second North Korean infiltration tunnel is discovered.
- June 1976: An incursion south of the DMZ in Gangwon-do leaves three dead from the North and six from the South.
- August 18, 1976: The Axe murder incident— an attempt to trim a tree in the Demilitarized Zone near Panmunjom— ends with two US soldiers dead and injuries to another four U.S. soldiers and five South Korean soldiers.
- July 14, 1977: A U.S. Army CH-47 Chinook helicopter is shot down after straying into the north over the DMZ. Three airmen are killed and one is briefly held prisoner (this was the sixth such incident since the armistice was signed).
- October 1978: The third North Korean infiltration tunnel is discovered.
October 27 1979 US patrol fired at night after President Park Assassination October 28 1979 2nd event US patrol fired upon at night
- October 1979: Three North Korean agents attempting to infiltrate the eastern sector of the DMZ are intercepted, killing one of the agents.
- December 6, 1979: US patrol in the DMZ accidentally crosses the MDL into a North Korean minefield in heavy fog. One US soldier is killed and four are injured; the body is recovered from the North Koreans five days later.
- March 1980: Three North Koreans are killed while trying to cross the Han River estuary into the South.
- May 1980: North Koreans engage US/ROK Outpost Ouillette on the DMZ in a firefight. One North Korean WIA.
- March 1981: Three North Koreans try to enter South Korea in Geumhwa-eup, Cheorwon, Gangwon-do; one is killed.
- July 1981: Three North Koreans are killed trying to cross the upper Imjin River to the South.
- May 1982: Two North Korean infiltrators are spotted on the east coast, with one being killed.
- December 1983: U.S. soldiers encounter attempted infiltration of DPRK soldiers over the MDL south into the American sector but were repelled by the QRF deployed from Camp Greaves, South Korea.
- November 1984: Three North Korean and one South Korean soldiers killed, and one American soldier wounded in a firefight that broke out after a Russian defector fled across the DMZ into South Korea.
- November 1987: American soldier and two North Korean soldiers die, and one American soldier is wounded during the firefight that erupted when a North Korean security detail confronted a sniper detail across the MDL into the southern-controlled sector of the Joint Security Area.
- November 1987: One South Korean killed on DMZ central sector by North Korean sniper fire.
- March 1990: The fourth North Korean infiltration tunnel is discovered, in what may be a total of seventeen tunnels in all.
- May 1992: Three Northern soldiers in South Korean uniforms are killed at Cheorwon, Gangwon-do; three South Korean soldiers are wounded.
- December 17, 1994: A U.S. Army OH-58A+ Kiowa helicopter inadvertently crosses 10 km into North Korean territory and is shot down. Of the crew of two, one dies and the other is held for 13 days.
- May 1995: North Korean forces fire on a South Korean fishing boat, killing three.
- October 1995: Two armed North Koreans are discovered at the Imjin River; one is killed.
- April 1996: Several hundred armed North Korean troops enter the Demilitarized Zone at the Joint Security Area and elsewhere on three occasions, in violation of the Korean armistice agreement.
- May 1996: Seven Northern soldiers cross the Demilitarized Zone, but withdraw after warning shots are fired.
- May & June 1996: North Korean vessels twice cross the Northern Limit Line and have a several-hour standoff with the South Korean navy.
- September 1996: North Korean Sang-O class submarine inserts reconnaissance team and runs aground on the east coast of South Korea near Jeongdongjin, 20 kilometres south-east of Gangneung, Gangwon-do, leading to a 49-day manhunt for the 25 crewmen.
- April 1997: Five North Korean soldiers cross the Demilitarized Zone in Cheolwon, Gangwon-do, and fire on South Korean positions.
- June 1997: Three North Korean vessels cross the Northern Limit Line and attack South Korean vessels two miles (3 km) south of the line. On land, fourteen North Korean soldiers cross 70 m south of the center of the DMZ, leading to a 23-minute exchange of fire.
- July 1998: A dead North Korean frogman was found with paraphernalia on a beach south of the DMZ.
- June 1999: The First Battle of Yeonpyeong, a series of clashes between North and South Korean vessels, takes place in the Yellow Sea near the Northern Limit Line.
- October 26, 2000: Two US aircraft observing a ROK army military exercise accidentally cross over the DMZ.
- 2001: On twelve separate occasions, North Korean vessels cross the Northern Limit Line and then withdraw.
- November 27, 2001: North and South Korean forces exchange fire without injuries.
- June 29, 2002: The second battle of Yeonpyeong leads to the deaths of six South Korean sailors and the sinking of a South Korean vessel. The number of North Koreans killed is unknown.
- November 16, 2002: South Korean forces fire warning shots on a Northern boat crossing the Northern Limit Line. The boat withdraws. The similar incident is repeated on November 20.
- February 19, 2003: A North Korean fighter plane crosses seven miles (11 km) south of the Northern Limit Line, and returns north after being intercepted by six South Korean planes.
- March 2, 2003: Four North Korean fighter jets intercept a US reconnaissance plane over the Sea of Japan.
- July 17, 2003: North and South Korean forces exchange fire at the DMZ around 6 AM. The South Korean army reports four rounds fired from the North and seventeen from the South. No injuries are reported.
- November 1, 2004: North Korean vessels, claiming to be in pursuit of illegal fishing craft, cross the Northern Limit Line and are fired upon by the South. The vessels withdraw 3 hours later.
- May 26, 2006: Two North Korean soldiers enter the DMZ and cross into South Korea. They return after South Korean soldiers fire warning shots.
- July 30, 2006: Several rounds are exchanged near a South Korean post in Yanggu, Gangwon.
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- October 7, 2006: South Korean soldiers fire warning shots after five North Korean soldiers cross briefly onto their side of the border.
- October 27, 2009: A South Korean pig farmer, who was wanted for assault, cut a hole in the DMZ fence and defected to North Korea.
- November 10, 2009: Naval vessels from the two Koreas exchanged fire in the area of the NLL, reportedly causing serious damage to a North Korean patrol ship. For more details of this incident, see Battle of Daecheong.
- January 27, 2010: North Korea fires artillery shells into the water near Baengnyeong Island and South Korean vessels return fire. Three days later, North Korea continued to fire artillery towards the area.
- March 26, 2010: A South Korean naval vessel, the ROKS Cheonan, was allegedly sunk by a North Korean torpedo near Baengnyeong Island in the Yellow Sea. A rescue operation recovered 58 survivors but 46 sailors were killed. On May 20, 2010, a South Korean led international investigation group concluded that the sinking of the warship was in fact the result of a North Korean torpedo attack. North Korea denied involvement. The United Nations Security Council made a Presidential Statement condemning the attack but without identifying the attacker.
- October 29, 2010: Two shots are fired from North Korea toward a South Korean post near Hwacheon and South Korean troops fire three shots in return.
- November 23, 2010: North Korea fired artillery at South Korea's Greater Yeonpyeong island in the Yellow Sea and South Korea returned fire. Two South Korean marines and two South Korean civilians were killed, six were seriously wounded, and ten were treated for minor injuries. About seventy South Korean houses were destroyed. North Korean casualties were unknown, but Lee Hong-gi, the Director of Operations of the South Korean Joint Chiefs of Staff (JCS), claimed that as a result of the South Korean retaliation "there may be a considerable number of North Korean casualties".
- October 6, 2012: An 18-year-old North Korean Army private defects to South Korea. He is apparently not detected as he crossed the DMZ and has to knock on an ROK barracks door to draw attention to himself. The soldier later tells investigators that he defected after killing two of his superiors.
- September 16, 2013: A 47-year-old man is shot dead by South Korean soldiers while trying to swim across the Tanpocheon Stream near Paju to North Korea.
- February 26, 2014: South Korean defense officials claim that despite warnings a North Korean warship has repeatedly crossed into South Korean waters overnight.
- March 24, 2014: A North Korean drone is found crashed near Paju. The onboard cameras contain pictures of the Blue House and military installations near the DMZ. Another North Korean drone crashes on Baengnyeongdo on March 31.
- October 10, 2014: North Korean forces fire anti-aircraft rounds at propaganda balloons launched from Paju. South Korean military return fire after a warning.
- October 19, 2014: A group of North Korean soldiers approach the South Korean border and South Korean soldiers fire warning shots. The North Korean soldiers return fire before retreating. No injuries or property damage result.
- June 15, 2015: A teenaged North Korean soldier walks across the DMZ and defects at a South Korean guard post in north-eastern Hwacheon.
- August 4, 2015: Two South Korean soldiers were wounded after stepping on landmines that had allegedly been laid on the southern side of the DMZ by North Korean forces next to a ROK guard post. Kim Jin Moon of the South Korean-based Korea Institute for Defense Analyses, suggested that the incident was planned by members of the General Bureau of Reconnaissance to prove their loyalty to Kim Jong-un.
- August 20, 2015: As a reaction to the August 4 landmines, South Korea resumed playing propaganda on loudspeakers near the border. In 2004 both sides had agreed to end their loudspeaker broadcasts at each other. North Korea threatened to attack those loudspeakers, and on August 20 North Korea fired a rocket and shells across the border into Yeoncheon County. South Korea responded by firing artillery shells back at the origin of the rocket. There were no reports of injuries on either side. Following threats of war from the North, and various troops movements by both North and South Korea and the United States, an agreement was reached on August 24 that North Korea would express sympathy for the landmine incident in return for South Korea deactivating the loudspeakers.
- January 3, 2016: South Korean soldiers fired warning shots at a suspected North Korean drone near the DMZ.
- November 13, 2017: North Korean soldier Oh Chong-song defected by crossing the demarcation line in the JSA. The defector was shot by other KPA soldiers and was found about 55 yards (50 m) from the demarcation line.
- November 15, 2017: an American citizen was arrested by South Korean forces for crossing the civilian control line just outside the DMZ as part of an attempt to get into North Korea "for political purposes," authorities said.
- December 21, 2017: a North Korean soldier crossed the DMZ to defect to South Korea. 40 minutes later shots were fired at the North Korean side of the DMZ, though the defector was not fired upon.
- August 12, 2018: A South Korean citizen was arrested for attempting to illegally enter North Korea. According to the reports, a 34-year-old man surnamed Suh drove an SUV through the checkpoint on the South Korean side of the Unification Bridge in Paju, Gyeonggi Province, which leads to the Demilitarized Zone separating the two Koreas, without undergoing proper inspection. Suh was caught by South Korean troops at the joint security area of Panmunjom, at a reservoir located 6 kilometers away from the bridge. This is Suh’s second known attempt to enter North Korea. 
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