With the onset of the Cold War, negotiations between the United States and the Soviet Union failed to lead to an independent, unified Korea. In 1948, UN-supervised elections were held in the US-occupied south only. This led to the establishment of the Republic of Korea in South Korea, which was promptly followed by the establishment of the Democratic People's Republic of Korea in North Korea. The United States supported the South, the Soviet Union supported the North, and each government claimed sovereignty over the whole Korean peninsula.
The subsequent Korean War, which lasted from 1950 to 1953, ended with a stalemate and has left the two Koreas separated by the Korean Demilitarized Zone (DMZ) up to the present day.
At the Tehran Conference in November 1943 and the Yalta Conference in February 1945, the Soviet Union promised to join its allies in the Pacific War in two to three months after victory in Europe. On August 8, 1945, three months to the day after the end of hostilities in Europe, and two days after the atomic bomb was dropped on Hiroshima, the Soviet Union declared war on Japan.[6] Soviet troops advanced rapidly, and the US government became anxious that they would occupy the whole of Korea. On August 10, 1945 two young officers – Dean Rusk and Charles Bonesteel – were assigned to define an American occupation zone. Working on extremely short notice and completely unprepared, they used a National Geographic map to decide on the 38th parallel. They chose it because it divided the country approximately in half but would place the capital Seoul under American control. No experts on Korea were consulted. The two men were unaware that forty years before, Japan and pre-revolutionary Russia had discussed sharing Korea along the same parallel. Rusk later said that had he known, he "almost surely" would have chosen a different line.[7] [8] The division placed sixteen million Koreans in the American zone and nine million in the Soviet zone.[9] To the surprise of the Americans, the Soviet Union immediately accepted the division. The agreement was incorporated into General Order No. 1 (approved on 17 August 1945) for the surrender of Japan.[10]
Soviet forces began amphibious landings in Korea by August 14 and rapidly took over the north-east of the country, and on August 16 they landed at Wonsan.[11] On August 24, the Red Army reached Pyongyang.[10]
General Abe Nobuyuki, the last Japanese Governor-General of Korea, had established contact with a number of influential Koreans since the beginning of August 1945 to prepare the hand-over of power. Throughout August, Koreans organized people's committee branches for the "Committee for the Preparation of Korean Independence" (CPKI, 조선건국준비위원회), headed by Lyuh Woon-hyung, a left-wing politician. On September 6, 1945, a congress of representatives was convened in Seoul and founded the short-lived People's Republic of Korea.[12] [13]
A Soviet-US Joint Commission met in 1946 and 1947 to work towards a unified administration, but failed to make progress due to increasing Cold War antagonism and to Korean opposition to the trusteeship.[17] Meanwhile, the division between the two zones deepened. The difference in policy between the occupying powers led to a polarization of politics, and a transfer of population between North and South.[18] In May 1946 it was made illegal to cross the 38th parallel without a permit.[19]
On September 7, 1945, General Douglas MacArthur announced that Lieutenant General John R. Hodge was to administer Korean affairs, and Hodge landed in Incheon with his troops the next day. The Provisional Government of the Republic of Korea, which had operated from China, sent a delegation with three interpreters to Hodge, but he refused to meet with them.[20] Likewise, Hodge refused to recognize the newly formed People's Republic of Korea and its People's Committees, and outlawed it on 12 December.[21]
In September 1946, thousands of laborers and peasants rose up against the military government. This uprising was quickly defeated, and failed to prevent scheduled October elections for the South Korean Interim Legislative Assembly.
The ardent anti-communist Syngman Rhee, who had been the first president of the Provisional Government and later worked as a pro-Korean lobbyist in the US, became the most prominent politician in the South. On July 19, 1947, Lyuh Woon-hyung, the last senior politician committed to left-right dialogue, was assassinated by a right-winger.[22]
The government conducted a number of military campaigns against left-wing insurgents. Over the course of the next few years, between 30,000[23] and 100,000 people were killed.[24]
In February 1946 a provisional government called the Provisional People's Committee was formed under Kim Il-sung, who had spent the last years of the war training with Soviet troops in Manchuria. Conflicts and power struggles ensued at the top levels of government in Pyongyang as different aspirants maneuvered to gain positions of power in the new government. In March 1946 the provisional government instituted a sweeping land-reform program: land belonging to Japanese and collaborator landowners was divided and redistributed to poor farmers.[26] Organizing the many poor civilians and agricultural laborers under the people's committees, a nationwide mass campaign broke the control of the old landed classes. Landlords were allowed to keep only the same amount of land as poor civilians who had once rented their land, thereby making for a far more equal distribution of land. The North Korean land reform was achieved in a less violent way than in China or in Vietnam. Official American sources stated: "From all accounts, the former village leaders were eliminated as a political force without resort to bloodshed, but extreme care was taken to preclude their return to power."[27] The farmers responded positively; many collaborators and former landowners fled to the south, where some of them obtained positions in the new South Korean government. According to the U.S. military government, 400,000 northern Koreans went south as refugees.[28]
Key industries were nationalized. The economic situation was nearly as difficult in the north as it was in the south, as the Japanese had concentrated agriculture in the south and heavy industry in the north.
Soviet forces departed in 1948.[29]
The decision to proceed with separate elections was unpopular among many Koreans, who rightly saw it as a prelude to a permanent division of the country. General strikes in protest against the decision began in February 1948.[19] In April, Jeju islanders rose up against the looming division of the country. South Korean troops were sent to repress the rebellion. Tens of thousands of islanders were killed and by one estimate, 70% of the villages were burned by the South Korean troops.[34] The uprising flared up again with the outbreak of the Korean War.[35]
In April 1948, a conference of organizations from the north and the south met in Pyongyang, but the conference produced no results. The southern politicians Kim Koo and Kim Kyu-sik attended the conference and boycotted the elections in the south, as did other politicians and parties.[36] [37] Kim Koo was assassinated the following year.[38]
On May 10, 1948 the south held a general election. On August 15, the "Republic of Korea" formally took over power from the U.S. military, with Syngman Rhee as the first president. In the North, the "Democratic People's Republic of Korea" was declared on September 9, with Kim Il-sung as prime minister.
On December 12, 1948, the United Nations General Assembly accepted the report of UNTCOK and declared the Republic of Korea to be the "only lawful government in Korea".[39]
Unrest continued in the South. In October 1948, the Yeosu–Suncheon Rebellion took place, in which some regiments rejected the suppression of the Jeju uprising and rebelled against the government.[40] In 1949, the Syngman Rhee government established the Bodo League in order to keep an eye on its political opponents. The majority of the Bodo League's members were innocent farmers and civilians who were forced into membership.[41] The registered members or their families were executed at the beginning of the Korean War. On December 24, 1949, South Korean Army massacred Mungyeong citizens who were suspected communist sympathizers or their family and affixed blame to communists.[42]
The Korean Armistice Agreement was signed after three years of war. The two sides agreed to create a four-kilometer-wide buffer zone between the states, known as the Korean Demilitarized Zone (DMZ). This new border, reflecting the territory held by each side at the end of the war, crossed the 38th parallel diagonally.
The Armistice established a Neutral Nations Supervisory Commission (NNSC) which was tasked to monitor the Armistice. Since 1953, members of the Swiss[43] and Swedish[44] Armed Forces have been members of the NNSC stationed near the DMZ.