Land swaps can only work if the P.A. will be demilitarized. Israel cannot give land to a terrorist state. Israel is a very tiny country. Losers in wars cannot dictate terms to the winners. In 1947-48, the Pals had a chance for their own state, and rejected it and attacked Israel, in a war of annihilation.
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)