Carter cost the world five friendly nations by abandoning strong allies. Four to communism and one to Shiite extremism. Hundreds of thousands of people suffered and died because of his being a lily-livered weakling.
Carter also gutted the intelligence services, and subjected the military to malign neglect.
We can’t add up 0bama’s damage, yet, because the wretched bastard isn’t done yet ... but I think he has already out cartered Carter.