Carter was also a vocal critic of Israeli policies and “view[ed] the unarmed young Palestinians who stood up against thousands of Israel soldiers as ‘instant heroes,’” wrote Brinkley. “Buoyed by the intifada, Carter passed on to the Palestinians, through Arafat, his congratulations.”
Carter's anti-Israel penchant was apparent to me at the time. I voted Republican for the only time in my life in 1980, because I could not bear to vote for Carter. The final straw was when Andy Young at the UN "accidentally" failed to veto a Security Council resolution condemning Israel. At that level, one doesn't make mistakes like that. The linked commentary places that vote in the appropriate historical light.