User blog comment:Bolg, son of Azog/Morgoth and the Ring/@comment-24.132.105.110-20130816193016/@comment-13112916-20130816220934

Morgoth probably would not have forged a Ring of Power, as that would involve creating something, and he only really wants to destroy, If any villian wants to destroy the Valar then it is Sauron, because he is concerned with sheer Dominion. Them and Gondor are the only things standing in his way of Dominion. However, if Sauron had had the ring in the events of The Return of the King, he could have easily defeated Gondor and Rohan too at the battle of the Pelennor Fields. He then, probably being smarter than Morgoth, would have unsuccessfully tried to attack Valinor with the Nazgul and werewolves and vampires. However, I am not sure if the Valar could defeat Sauron if he was bearing the ring. And he could not have traveled to Valinor, because at the end of the Second Age Valinor was removed from "the world visible".