President Trump's decision to recognize Israel's sovereignty over the Golan Heights is a presidential twofer. It represents a long-overdue step toward adjusting our policy to the strategic realities. Plus, too, it spotlights here at home a political tragedy namely that the Democratic Party is decamping from Israel's cause in an effort to appease its own left-wing factions. Mr. Trump wins on both counts. It would be a mistake to make too much of this. The Golan question is not in the...