While Israeli politicians continue to debate the merits of the “two-state solution,” their Palestinian interlocutors have long moved beyond that model for the solution of the Middle East conflict. For Palestinian Authority Chairman Mahmoud Abbas, the idea of a “greater Palestine”—that would stretch from “the river to the sea”—is now an official policy. If this policy had until now been elucidated verbally in Arabic, by “minor” government officials—allowing the PA to say that they had been speaking out of turn or voicing personal opinions—it has now taken on a much more official persona. In a series of videos and images...