Israel? I wrote a big-ass comment talking about this before so I'll just copy and paste from it.
Oslo accords: Negotiations were progressing until Rabin got fucking assassinated by a Zionist terrorist, at a time where the Israeli right was actively calling for his assassination. Netanyahu, who came in his place, called the whole thing off.
Camp David: The then-Israeli foreign affairs minister stated he wouldn't have accepted the offer if he were in Arafat's place. The Israeli offer was that bad, and they weren't willing to compromise.
The 2008 Olmert offer was mostly behind closed doors so nobody actually knows what was going on (both sides blame each others for not following up on negotiations), but from what we do know the offer included keeping an unacceptably large part of the West Bank (about 10% by the Palestinian calculation).
2014 offer: The American envoy stated that the blame for the failure of the negotiations (not an offer, since Israel didn't actually offer anything) lied squarely on Israel, and specifically Netenyahu. That's how uncooperative Israel was.
And that should be all peace negotiations with Israel since the Oslo accords. The idea that Palestinians rejected peace is pure Israeli propaganda.