Question: Who was the North Korean leader who ordered the invasion of South Korea?
About the article "Korean War", section "Division of Korea (1954–present)".

Candidate passages:
Jang Jin-sung (장진성) is the pseudonym of a North Korean poet who defected to South Korea.
He had worked as a high-ranking propaganda official.
Jang claims to have been one of late North Korean leader Kim Jong Il's favorite propaganda poets.
He defected to South Korea in 2004. 
South Koreans who were kidnapped by North Korean agents in the South Korean territory or foreign countries after the armistice was signed in 1953 are known as postwar abductees.
Most of them were captured while fishing near the DMZ, but some were abducted by North Korean agents in South Korea.
North Korea continued to abduct South Koreans into the 2000s, as is shown by the cases of reverend, Kim Dongsik (), who was abducted on January 16, 2000, and Jin Gyeong-suk (), a North Korean defector to South Korea who was abducted on August 8, 2004, when she had returned to the China-North Korea border region using her South Korean passport. 
Course of the war.
The Korean War begins (June 1950).
Kim Il-sung was determined to achieve reunification with the South by force.
The Soviet military became extensively involved in North Korea's war planning.
There are differing accounts of the degree of Soviet support, ranging from backing if the North was attacked, to approval, to actually initiating the war.
Similarly, some accounts indicate that Chinese support was stronger than Soviet support, and some say it was reluctant.
Declassified documents from the Soviet Foreign Ministry and Presidential Archives now show a much clearer, but still complex picture of the interactions between Kim, Soviet leader Josef Stalin, and Chinese leader Mao Zedong regarding the decision to invade South Korea.
By 1949, South Korean forces had reduced the active number of communist guerrillas in the South from 5,000 to 1,000.
However, Kim Il-Sung believed that the guerrillas had weakened the South Korean military and that a North Korean invasion would be welcomed by much of the South Korean population.
Kim began seeking Stalin's support for an invasion in March 1949, travelling to Moscow to attempt to persuade Stalin.
Initially, Stalin did not think the time was right for a war in Korea.
Chinese Communist forces were still fighting in China.
American forces were still stationed in South Korea (they would complete their withdrawal in June 1949) and Stalin did not want the Soviet Union to become embroiled in a war with the US.
But by Spring 1950, Stalin believed the strategic situation had changed.
The Soviets had detonated their first nuclear bomb in September 1949; American soldiers had fully withdrawn from Korea; the Americans had not intervened to stop the communist victory in China, and Stalin calculated that the Americans would be even less willing to fight in Korea – which had seemingly much less strategic significance.
Stalin began a more aggressive strategy in Asia based on these developments, including promising economic and military aid to China through the Sino-Soviet Friendship, Alliance, and Mutual Assistance Treaty.
Throughout 1949 and 1950 the Soviets continued to arm North Korea.
After the Communist victory in the Chinese Civil War, ethnic Korean units in the Chinese People's Liberation Army (PLA) were released to North Korea.
The combat veterans from China, the tanks, artillery and aircraft supplied by the Soviets, and rigorous training increased North Korea's military superiority over the South, which had been armed by the American military.
In April 1950, Stalin gave Kim permission to invade the South under the condition that Mao would agree to send reinforcements if they became needed.
Stalin made it clear that Soviet forces would not directly engage in combat, to avoid a direct war with the Americans.
Kim met with Mao in May 1950.
Mao was concerned that the Americans would intervene but agreed to support the North Korean invasion.
China desperately needed the economic and military aid promised by the Soviets.
At that time, the Chinese were in the process of demobilizing half of the PLA's 5.6 million soldiers.
However, Mao sent more ethnic Korean PLA veterans to Korea and promised to move an Army closer to the Korean border.
Once Mao's commitment was secured, preparations for war accelerated.
Soviet generals who had extensive combat experience in the Second World War were sent to the Soviet Advisory Group in North Korea.
These generals completed plans for the attack by May.
The original plans were to start with a skirmish in the Ongjin peninsula on the west coast of Korea.
The North Koreans would then launch a "counterattack" that would capture Seoul and encircle and destroy the South Korean army.
The final stage would involve destroying South Korean government remnants, capturing the rest of South Korea, including the ports.
On 7 June 1950, Kim Il-sung called for a Korea-wide election on 5–8 August 1950 and a consultative conference in Haeju on 15–17 June 1950.
On 11 June, the North sent three diplomats to the South, as part of a planned peace overture that South Koreans were certain to reject.
On 21 June, Kim Il-Sung requested permission to start with general attack across the 38th parallel, rather than a limited operation in the Ongjin peninsula.
Kim was concerned that South Korean agents had learned about the plans and South Korean forces were strengthening their defenses.
Stalin agreed to this change of plan.
Although South Korean and American intelligence officers had in fact predicted an attack, they had incorrectly done so many times before.
The Central Intelligence Agency noted the southward movement of North Korean forces, but said it was a "defensive measure" and concluded an invasion was "unlikely".
South Korean and U.S. forces were unprepared.
On 23 June, UN observers had inspected the border and failed to notice the imminent attack.
The Korean People's Army (KPA) crossed the 38th parallel behind artillery fire at dawn on Sunday 25 June 1950.
The KPA claimed that Republic of Korea Army (ROK Army) troops, under command of the régime of the "bandit traitor Syngman Rhee", had attacked first, and that they would arrest and execute Rhee.
There had been frequent skirmishes along the 38th parallel.
Fighting began on the strategic Ongjin peninsula in the west.
There were initial South Korean claims that they had captured the city of Haeju, and this sequence of events had led some scholars to argue that the South Koreans actually fired first.
For South Koreans, the Korean war is sometimes called the "June 25th incident".
Whoever fired the first shots in Ongjin, within an hour, North Korean forces attacked all along the 38th parallel.
The North Koreans had a combined arms force including tanks supported by heavy artillery.
The South Koreans did not have any tanks, anti-tank weapons, nor heavy artillery, that could stop such an attack.
In addition, South Koreans deployed their outgunned forces piecemeal and were routed within the first few days.
On 27 June, Rhee secretly evacuated from Seoul with government officials.
On 28 June, at 2am, the South Korean Army blew up the highway bridge across the Han River in an attempt to stop the North Korean army.
The bridge was detonated while 4,000 refugees were crossing the bridge, and hundreds were killed.
Destroying the bridge also trapped many South Korean military units North of the Han River.
In spite of such desperate measures, Seoul fell that same day.
A number of South Korean National Assemblymen remained in Seoul when it fell.
48 subsequently pledged allegiance to the North.
The South Korean forces, which had 95,000 men on 25 June, could account for less than 22,000 men by the end of June.
In early July, when U.S. forces arrived, South Korean forces were placed under U.S. operational command of the United Nations Command (Korea).
There were numerous massacres of civilians and atrocities throughout the Korean war.
Both sides began killing civilians even during the first days of the war.
On 28 June, Rhee ordered the Bodo League massacre.
See also #War crimes. 
Number of POWs held in North Korea.
South Korean POWs.
The exact number of South Korean POWs who were detained in North Korea after the war is unknown, as is the number who still survive in North Korea.
In its report to the legislature in October 2007, the South Korean Ministry of Defense reported that "a total of 41,971 South Korean soldiers were missing during the Korean War.
8,726 were repatriated through POW exchanges after the Armistice of 1953.
Some 13,836 have been determined to have been killed based on other information.
To date, the status of 19,409 soldiers has not been confirmed."
Most of these unconfirmed were believed to been unrepatriated POWs.
Other estimates of South Korean POWs held by the North Koreans at the Armistice have been higher .
Yi Hang-gu, a writer and North Korea expert currently in South Korea who had served as a Sergeant in the North Korean People's Army, has testified that he commanded former South Korean POWs who had been enlisted into the North Korean Army during the Korean War.
Yi's unit, the 22nd Brigade, was composed mostly of former South Korean captives led by North Korean officers and non-commissioned officers.
Yi has said the number of South Korean POWs who survived in North Korea at the end of the fighting "could have been about 50,000-60,000."
The South Korean government estimates that 560 South Korean POWs still survive in North Korea.
This number is based upon analysis of various testimonies from defectors and former POWs who managed to escape North Korea.
Other researchers (e.g.
the Korean Institute for National Unification's 2008 White Paper on Human Rights in North Korea) think the actual number of POWs still alive in North Korea could be higher, since many of the POWs who have recently managed to escape had been presumed to have been killed. 
  In July 2012 South Korean unification activist Roh Su-hui, who had entered North Korea in March in order to promote his cause of Korean unification, was arrested by South Korean authorities, after returning to South Korea through the Joint Security Area.