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| 1951, Jan. 1 |
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| North Korean and Chinese forces attacked and broke through UN lines along the 38th parallel. Seoul fell again on Jan. 4. | 1 |
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| Jan. 11 |
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| The UN truce commission proposed a five-point peace plan for East Asia. After the People's Republic of China rejected the proposal (Jan. 17), the U.S. submitted a resolution that China be found guilty of aggression in Korea. The UN General Assembly so resolved on Feb. 1. | 2 |
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| Feb |
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| South Korean military forces murdered some 500 local people in South Kyongsang Province for, the government claimed, harboring Communist guerrillas. | 3 |
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| Feb. 12 |
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| Prime Minister Clement Attlee announced Great Britain's opposition to sanctions against China as long as any possibility of a negotiated settlement remained. | 4 |
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| March 12 |
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| UN forces reoccupied Seoul, sending the North Koreans and Chinese into retreat. | 5 |
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| March 24 |
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| Gen. MacArthur announced his readiness to meet in the field the commander of the North Korean and Chinese forces for a discussion of means to end the bloodshed. The Beijing government rejected his offer on March 29. The governments of India (March 31) and Great Britain (April 2) urged that a truce be arranged. | 6 |
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| April 3 |
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| UN forces, having contained the Communists' first spring offensive, counterattacked across the 38th parallel. | 7 |
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| April 10 |
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| Pres. Truman replaced Gen. MacArthur with Gen. Matthew B. Ridgway (See April 11). | 8 |
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| May 15 |
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| Chinese and North Korean armies launched their second spring offensive. After one week of heavy losses, they were halted and forced into a general withdrawal. | 9 |
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| May 18 |
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| The UN General Assembly embargoed arms, munitions, and critical raw materials to Communist China. | 10 |
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| June 23 |
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| On a UN radio program, Soviet representative Jacob A. Malik made a vaguely worded call for a cease-fire and armistice talks in Korea. Two days later, Pres. Truman replied that the U.S. was willing to engage in such talks. On June 29, Gen. Ridgway broadcasted to the commander in chief of Communist forces in Korea an offer to negotiate an armistice. The Communist forces agreed to a meeting to discuss a cease-fire (July 1). | 11 |
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| July 8 |
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Truce negotiations commenced at Kaes ng. | 12 |
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