Micro managing was Carters downfall. I’ve heard stories that you had to get permission from him before you could use the White House tennis courts. That there is a fatal inability to delegate. The whole hating Jews thing didn’t help. Throwing the Shah of Iran to the wolves seriously damaged the already tenuous relations with many foreign nations, and led to the hostage crisis. Oh yeah and the next 38 years of Islamic extremism, Let’s not forget that. (like we could)
CC
It was worse that that. It was largely due to Jimmy Carter's meddling that the Shah stopped cracking down on the religious fanatic dissidents. Jimmy also talked the Shah into allowing Chief Nutbag (Ayatollah Khomeini) back into Iran.
I've read articles which claim Carter did far more than that to destabilize the Shah's regime.