The same person quoted also said that, in this article.

Geoffrey Robertson KC, a founding head of Doughty Street Chambers and a former president of the UN war crimes court in Sierra Leone, said the attack on Venezuela was contrary to article 2(4) of the charter. “The reality is that America is in breach of the United Nations charter,” he added. “It has committed the crime of aggression, which the court at Nuremberg described as the supreme crime, it’s the worst crime of all.”