How did the UN Security Council describe the actions of the North Koreans?

as aggression

as a police action

as a violation of the Potsdam agreement

as a Soviet-sponsored action

North Korea's actions represented exactly the kind of aggression that should have led the United Nations to a collective response. However, as a resolution by the UN Security Council could be vetoed by any of the five permanent members, including the Soviet Union, it seemed that UN action would be blocked.