The PEIS Plan: The Israeli-Palestinian conflict is deemed the most intractable conflict in modern times: Every plan since the mid-20th century comes to dead ends. This book introduces a novel solution that can resolve this conflict once and for all. The "deus ex machina" in this book is the introduction of the Sinai Peninsula. Egypt would sell the "bad" part of the Sinai Peninsula to the Palestinians; the Palestinians would combine that purchase with the Gaza Strip to create a contiguous, two-seas-access new nation alongside Israel but 50% bigger; the Israelis would purchase the West Bank from the Palestinians to achieve their yearn for the "Land of Israel", and give the Palestinians the means to purchase their portion of the Sinai Peninsula. The PEIS Plan stands for the Palestine-Egypt-Israel-Sinai peace plan. This book summarizes the current conflict, describes the solution, and explains why the Egyptians, Palestinians, Israelis, and the other parties in the conflict such as the Bedouins and Islamic insurgents, should welcome the PEIS Plan, and how the PEIS Plan, in one stroke, would resolve the status of Jerusalem, the right of return of the Palestinian diaspora, the feud between Hamas and the Palestinian Administration, the Sinai insurgency against Egypt, and how Israel could ultimately afford to pay for this Plan to unify the country.