Jimmy Carter did not start the cold war with Iran.
Jimmy Carter in the feckless, pusillaminous guise of chicken-sh*t naif, gave rise to, spawned, created, what has metastized into the Cold War with Iran.
When Carter arranged for the Shah to be replaced by the flakes and nuts who are still running Iran because the Shah wasn’t willing to pay Jimmah and his buddies their payoffs, he started the cold war with Iran.