The son of the elderly Iranian ruler, aligned politically with his father, took over. The war prompted Iran to operate one of the world's largest economic pressure levers, to great effect. The U.S.'s unilateralism, leadership rhetoric, and war crimes (like bombing a school) have lost it a significant amount of global goodwill.
None of that seems like it jibes with your description.
None of that contradicts what I said. Obviously, the Iranian regime will replace them.