Yes, Jon has said that Israel and Greece are the two places he's never played before that he would like to.

However, one reason they've never played Israel is the volatile/dangerous situation there. I can't imagine why they would go there NOW when the situation is just as volatile as ever. Wouldn't staging a concert in Israel right now, gathering thousands of people in one place, just be asking for a suicide bomber to drop in? I mean no offense to anyone. I'm sure it's a wonderful country full of wonderful people. But is it really safe???