Red Korea

1950:
* June 25: North Korea launches a surprise attack on South Korea, beginning the Korean War.
* August 15: The Soviet Union recognizes North Korea's government and sends military aid.
* September 15: North Korean forces capture Seoul, the capital of South Korea.
1951:
* January 1: North Korean forces continue their advance into South Korea, capturing major cities and strategic positions.
* May 20: The Chinese People's Volunteer Army enters the war on the side of North Korea, bolstering the North Korean forces and allowing for more rapid advancement.
* September 1: The United States, in an effort to avoid escalation of the conflict, proposes a ceasefire and peace talks with North Korea and China.
1952:
* January 1: Ceasefire negotiations begin in Panmunjom, but make little progress.
* June 18: North Korean forces capture Pusan, the last major South Korean stronghold, effectively ending organized resistance in the South.
* July 27: The United States, faced with the prospect of total defeat, agrees to North Korea's terms for a ceasefire and an end to the war.
1953:
* January 1: North Korea begins the process of reunifying the Korean peninsula, with the North Korean government assuming control over the South.
* March 5: The United Nations recognizes the reunified Korean government, with the support of the Soviet Union and China.
* September 9: Kim Il-Sung is declared the leader of the reunified Korea, with Pyongyang as its capital.
1954:
* January 1: The reunified Korean government begins implementing socialist policies and restructuring the economy.
* March 1: The United States, faced with the reality of a united Korea under communist rule, imposes a total embargo on trade with the country.
* November 1: The reunified Korean government signs a military and economic alliance with the Soviet Union, solidifying its position as a socialist state.
1955:
* January 1: The reunified Korean government begins a program of land reform and collectivization, redistributing wealth and resources to benefit the working class.
* June 1: The Korean War Veterans Memorial is dedicated in Pyongyang, honoring the sacrifices made by North Korean and Chinese soldiers in the war.
* December 1: The reunified Korean government begins a program of industrialization, building factories and expanding its infrastructure with the help of Soviet and Chinese advisors.
1956:
* January 1: The reunified Korean government begins exporting raw materials and manufactured goods to Soviet-bloc countries and other socialist states.
* March 5: The reunified Korean government announces its withdrawal from the United Nations, citing the organization's bias towards capitalist interests.
* October 26: The reunified Korean government establishes diplomatic relations with Cuba, beginning a long-standing alliance between the two socialist states.
In this alternate timeline, North Korea successfully reunifies the Korean peninsula under communist rule, with the support of the Soviet Union and China. The reunified Korean government implements socialist policies and begins building its economy with the help of its socialist allies. The United States imposes a total embargo on trade with the country, further isolating it from the global economy. The reunified Korean government withdraws from the United Nations and establishes diplomatic relations with other socialist states, building alliances outside of the capitalist-dominated world order. The long-term effects on world history would be significant, as the success of a socialist state in East Asia would have challenged the dominance of capitalism and the United States in the region.