Why did the Soviet Union not veto the UN's decision to go to South Korea's aid? *

To show support for South Korea

They were boycotting UN meetings

Soviets wanted war to break out

they were not members of the UN

They were boycotting UN meetings

Explanation:

The soviets were boycotting UN meetings because the communists in China had gained power. The permanent seat of China was in control by the Republic of China which had fled to Taiwan. The peoples republic of China was the government that the Soviets were boycotting in support of.