Negotiations leading to peace can be realistic with an adversary who shares that goal. But Hamas, whose covenant calls for the slaughter of Jews worldwide, is striving not to join peace talks, but to prevent them. It rejects Israel’s existence, refuses to eschew terror, and disavows all previous Israeli-Palestinian agreements — the terms established by the United States and the other members of the so-called quartet of Middle East peacemakers for participation in the peace process. Bound by its genocidal theology and crude anti-Semitism, Hamas cannot be induced to make peace. But it can be deterred from war.