The invasion was about border dispute between the Kampucheans and Vietnamese government. As Pol Pot wanted his nation to become "year zero" a utopia and agrarian society. As vision of following his theory of "year zero" he wanted the "lost" land which belongs to Khmer Empire long ago but the Vietnamese took it. As the Kampucheans negotiate with Vietnam about give their "land" back, the Vietnamese immediately rejected their claim. Pol Pot assign a invasion to Vietnam island, Phú Quốc. The Khmer Revolutionary army captured Phú Quốc, but the Vietnam People's Army quickly re-captured it again. Massacre was against the Vietnamese people who were living in Phú Quốc. As a return the VPA invaded Democratic Kampuchea with 120,000 troops and captured Phnom Penh in 17 days two years later from the Khmer Rouge invasion of Phú Quốc. They setup a pro-Vietnamese government in People's Republic of Kampuchea with a puppet. As a revenge, the Khmer Rouge seek for the Chinese for action, Eventually the Chinese attempt to invade Vietnam. PRC was defeated. There was 2 reason why they lost.
1. They did not reach to Hanoi
2. They did not get the Vietnamese out of Cambodia.
And there you have it -
Vietnam invaded Cambodia because Khmer Rouge massacre in Phú Quốc. (South of Cambodia)
The French Indochina War 1946-1954 (aka 1st Indochina War).
France was the only European Nation fighting in the 1st Indochina War (also known as the French Indochina War or French War).
Only as men of the French Foreign Legion during the French Indochina War 1946-1954.
French Indochina War (or 1st Indochina War) 1946-1954.
The 1st Indochina War was to oust the French; the 2nd Indochina War was to oust the US. Both Indochina Wars involved the communists.
The French Indochina War 1946-1954 (aka 1st Indochina War).
France ruled it, and this is why it was called "French" Indochina.
The French had fought there from 1946 to 1954; 1st Indochina War or French Indochina War.
Invasion of French Indochina happened on 1940-09-26.
The French and the Japanese
Second French Indochina Campaign happened on 26-03-09.
France was the only European Nation fighting in the 1st Indochina War (also known as the French Indochina War or French War).
Only as men of the French Foreign Legion during the French Indochina War 1946-1954.
The Vietnamese
French Indochina War or 1st Indochina War.
French Indochina War (or 1st Indochina War) 1946-1954.
Brazil was not part of French Indochina before world war 2.