Palestine was a state already in the Mandate period and legally speaking Israel is part that split off from it in 1948. International laywers of name declare that states are legally bound to recognize the Pal state, since it fits all requirements. Israeli conditions are irrelevant in this respect.. Of course Israel can demand from the Pal state that it acts according to international law, but the Pal state can demand that equally from Israel. . For negotiating peace you need two partners at the same level: a fully recognised Pal state is needed for that.
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)