A demilitarised zone is an area in which treaties or other agreements between nations, military powers or contending groups forbid military installations, activities or personnel. They often lie along
de jure or
de facto frontiers or boundaries between two or more military powers or alliances. Demilitarised zones should not be confused with
border zones, which are areas lying along a border established unilaterally by a state for border control purposes. Many demilitarised zones are considered
neutral territory because neither side is allowed to control it, even for non-combat administration. Some zones remain demilitarised after an agreement has awarded control to a state which (under the DMZ terms) had originally ceded its right to maintain military forces in the disputed territory. It is also possible for powers to agree on the demilitarisation of a zone without formally settling their respective territorial claims, enabling the dispute to be resolved by peaceful means such as diplomatic dialogue or an international court. Several demilitarised zones have also unintentionally become
wildlife preserves because their land is unsafe for construction or less exposed to human disturbances (including hunting). Examples include the
Korean Demilitarised Zone, the
Cypriot Demilitarised Zone (
The Green Line), and the former
Vietnamese Demilitarised Zone which divided Vietnam into two countries (
North Vietnam and
South Vietnam) from 21 July 1954 to 2 July 1976.
Asia separating
North and
South Vietnam in 1969 As a result of the partition of the Korean peninsula by the United States and the Soviet Union after World War II, and exacerbated by the subsequent
Korean War, there is a
Demilitarised Zone (DMZ) spanning the
de facto border between
North Korea and
South Korea. The DMZ follows the effective boundaries as of the end of the Korean War in 1953. Similarly to the Frontier Closed Area in Hong Kong, this zone and the defence apparatus that exists on both sides of the border serve to curtail unauthorised passage between the two sides. In South Korea, there is an additional fenced-off area between the Civilian Control Line (CCL) and the start of the Demilitarised Zone. The CCL is a line that designates an additional buffer zone to the Demilitarised Zone within a distance of 5 to 20 kilometres from the Southern Limit Line of the Demilitarised Zone. Its purpose is to limit and control the entrance of civilians into the area to protect and maintain the security of military facilities and operations near the Demilitarised Zone. The commander of the
8th US Army ordered the creation of the CCL and it was activated and first became effective in February 1954. The buffer zone that falls south of the Southern Limit Line is called the Civilian Control Zone. Barbed wire fences and manned military guard posts mark the CCLe. South Korean soldiers typically accompany tourist busses and cars travelling north of the CCL as armed guards to monitor the civilians as well as to protect them from North Korean intruders. Most of the tourist and media photos of the "Demilitarised Zone fence" are actually photos of the CCL fence. The actual Demilitarised Zone fence on the Southern Limit Line is completely off-limits to everybody except soldiers and it is illegal to take pictures of the Demilitarised Zone fence. Similarly, the whole estuary of the
Han River in the Korean Peninsula is deemed a "Neutral Zone" and is officially off-limits to all civilian vessels. Only
military vessels are allowed within this neutral zone. In recent years, Chinese fishing vessels have taken advantage of the tense situation in the
Han River Estuary Neutral Zone and illegally fished in this area due to both
North Korean and
South Korean navies never patrolling this area due to the fear of naval battles breaking out. This has led to
firefights and sinkings of boats between Chinese fishermen and
South Korean Coast Guard. On 30 January 2019, North Korean and South Korean military officials signed a landmark agreement that would open the Han River Estuary to civilian vessels for the first time since the Armistice Agreement in 1953. The agreement was scheduled to take place in April 2019 but the failure of the
2019 Hanoi Summit indefinitely postponed these plans. In 1962, the
International Court of Justice had ordered the creation of a "provisional demilitarised zone" around
Preah Vihear whose ownership
is claimed by both
Cambodia and
Thailand. During the Japanese occupation of
Manchuria, when they administered as the puppet state of
Manchukuo, the
Tanggu Truce of May 1933 was concluded between China and Japan, establishing a demilitarised zone between Manchukuo and China. In 1937 Japan violated this truce with an invasion of the remainder of China. In 1945, after the fall of the Japanese empire at the end of the
Asia-Pacific theatre of
World War II, Manchuria was re-incorporated into China. Similarly, during the
Vietnam War, there was a
demilitarised zone between
North Vietnam and
South Vietnam. The zone was established in July 1954 as a result of the
Geneva Conference ending the war between the
Viet Minh and France. The DMZ in Vietnam officially lay at the
17th parallel but, in reality, extended about 1.5 km on either side of the
Bến Hải River and west to east from the
Lao border to the
South China Sea. The Vietnamese demilitarised zone was abolished following the reunification of the country in 1976.
Europe and the Middle East Demilitarised zones are common in Europe and the Middle East, especially in areas with territorial disputes in the aftermath of military conflicts.
Contemporary: • The
Green Line separating
Southern Cyprus and
Northern Cyprus is a demilitarised border zone operated by the
United Nations Peacekeeping Force in Cyprus The buffer zone was established in 1974 due to ethnic tensions between
Greek and
Turkish Cypriots. The green line is similar in nature to the
38th parallel separating the Republic of Korea and North Korea. •
Åland – The
Åland Convention of 1921, which was concluded following a decision of the
League of Nations in response to the
Åland crisis, mandates that the Finnish government maintain the territory as a demilitarised area. •
Ceuta border fence and
Melilla border fence – A
de facto demilitarised zone exists between the Spanish territories of
Ceuta and
Melilla and
Morocco. Perimeter fences around both cities have been constructed by Spanish and Moroccan authorities, creating a demilitarised zone between the Spanish and Moroccan fences. •
Transnistria – The
Joint Control Commission peacekeeping mission monitors a demilitarised security zone roughly outlining the
Dniester between
Moldova and the unrecognized Transnistria created by the
ceasefire agreement ending the
Transnistria War. •
Kuwait–Iraq barrier – The
United Nations Security Council approved the creation of a demilitarised zone between
Iraq and
Kuwait in
Resolution 689 after the
Persian Gulf War. Although the demilitarised zone is no longer mandated by the council, it continues to exist. •
Sinai Peninsula – The
Egypt–Israel peace treaty sets a limit to the amount of forces
Egypt can place in the Sinai Peninsula. Parts of the peninsula are demilitarised to various degrees, especially within 20–40 kilometres of Israel. Israel also agreed to limit its forces within 3 kilometres of the Egyptian border. The areas are monitored by the
Multinational Force and Observers. Because of the
Sinai insurgency all sides agreed and encouraged Egypt to send large amounts of military forces into the area, including tanks and helicopters, to fight Islamist groups. •
Sudan – A 10 km demilitarised zone along the
Sudan –
South Sudan border. •
United Nations Disengagement Observer Force Zone – The United Nations Security Council approved the creation of a demilitarised zone in a portion of the Israeli-
occupied territory of the
Golan Heights in Syria in
Resolution 350 after the
Yom Kippur War. The zone is monitored by the
United Nations Disengagement Observer Force. •
United Nations Interim Force in Lebanon – Created by the United Nations with the adoption of
Security Council Resolution 425 and
426, to confirm Israeli withdrawal from
Lebanon which Israel had
invaded in 1978, to restore international peace and security, and help the
Government of Lebanon restore its effective authority in the area. of Gibraltar.
Historical: • A neutral territory was established between the
British Overseas Territory of
Gibraltar and Spain after the end of the
1727 siege. A strip of land 600
toises (about 1.2 km) long, more than two cannon shots' distance between the British and Spanish guns, was called "the neutral ground" and shown as such on older maps. In 1908, the British built a fence in a portion claimed to be the British half of the neutral territory. Spain
does not recognise British sovereignty over the isthmus (including the border), asserting it is Spanish soil. Although both the United Kingdom and Spain used to be part of the European Union (before the United Kingdom's exit), the border was a
de facto international frontier with customs and immigration checks; Spain does not formally recognise it as a "frontier", referring to it as a "fence". •
Rhineland – The
Treaty of Versailles designated the Rhineland as a demilitarised zone after
World War I, prohibiting the
Weimar Republic from deploying its
military there. It was
re-occupied and re-militarised in 1936 by
Nazi Germany in violation of international treaties. •
Saudi–Iraqi neutral zone – The
Uqair Protocol of 1922 established a demilitarised zone between the
Sultanate of Nejd and the
Kingdom of Iraq, which at the time was a
League of Nations mandate administered by the
British Empire. Nejd was later incorporated into the
Kingdom of Saudi Arabia. The zone was partitioned in 1981 but the treaty was not filed with the United Nations. The zone was finally officially abolished during the
Persian Gulf War, when Iraq and Saudi Arabia cancelled all international agreements with each other. •
Saudi–Kuwaiti neutral zone – The Uqair Protocol established a neutral zone between the
Sultanate of Nejd and the
British protectorate of
Kuwait in 1922. It was partitioned by mutual agreement in 1970. • Israel and Egypt: • Following the
1948 Arab–Israeli War, a demilitarised zone (the
El Auja Zone) was created by the
1949 Armistice Agreements between Israel and Egypt. • Israel and Jordan: • The Israeli enclave and Jordanian area on
Mt. Scopus was designated as a DMZ. • The area around the
Latrun salient. • Israel and Syria: Following the 1948 Arab-Israeli War, three demilitarised zone were created by the
1949 Armistice Agreements between Israel and Syria. • Norway and Sweden established a demilitarised zone of 1 km on each side of their border after the
dissolution of the union between Norway and Sweden in 1905. The zone was abolished by mutual agreement in 1993. •
Northern Syria Buffer Zone – A 115 km demilitarised zone in northern Syria straddling portions of the
Syria–Turkey border. It was established between Turkey and the United States, both
NATO allies, during the
Syrian Civil War to prevent clashes between
Kurdish and Turkish forces. The DMZ collapsed in October 2019, after Turkey dismissed the agreement and the United States ordered a withdrawal of US forces from northern Syria, allowing the
2019 Turkish offensive into north-eastern Syria to go ahead. •
Ground Safety Zone – A 5 km demilitarised area between
Serbia and
Kosovo was created under the
Kumanovo Agreement following the
Kosovo War that existed between 1999 and 2001. Following the
Insurgency in the Preševo Valley, Serbian forces were allowed to enter GSZ. •
Idlib demilitarisation agreement zone (2018–2019) – A 15 km demilitarised zone, created by agreement between Russian and Turkish government, splitting the last major stronghold of the
Syrian rebels from the
Syrian government controlled area amidst the
Syrian Civil War. The zone was never fully implemented.
South America Martin García Island – The
Rio de la Plata Boundary Treaty of 1973 between
Argentina and
Uruguay established that the island would remain under Argentinean sovereignty but could only be used as a
natural reserve of flora and fauna. The
El Caguán Demilitarised zone was established in southern
Colombia between 1999 and 2002, during the failed
peace process that involved the Government of President
Andrés Pastrana and the
Revolutionary Armed Forces of Colombia (FARC). ==Antarctica==