the only reason the that it worked was that the soviet union and its allies who had veto on the security council chose to not show up for a security council meeting... the united states in a surprise move called for a vote authorizing the police action....the Russians and the Chinese have never boycotted a security council meeting after that vote. It was the one and only time an issue of enforcement has happened against the will of the of a major world power.
The Red Chinese were not members, Taiwan was. That’s what the Soviet boycott was about.