It is also generally held that if the war did not produce an outright defeat for China , it was a costly mistake fought for dubious purposes , high among them punishing Vietnam for overthrowing the Khmer Rouge leader of Cambodia , Pol Pot , a Chinese ally who was one of the 20th century 's bloodiest tyrants .
Pol Pot /people/person/nationality Cambodia
Pol Pot /people/deceased_person/place_of_death Cambodia
PRP VBZ RB RB VBN IN IN DT NN VBD RB VB DT JJ NN IN NNP , PRP VBD DT JJ NN VBN IN JJ NNS , JJ IN PRP VBG NNP IN VBG DT NNP NNP NN IN NNP , NNP NNP , DT JJ NN WP VBD CD IN DT JJ NN POS JJS NNS .
Pol Pot
PERSON
Cambodia
LOCATION
/people/person/nationality
Pol Pot
PERSON
Cambodia
LOCATION
/people/deceased_person/place_of_death