The Biden Administration has been consistent: The Palestinian Authority must rule Gaza after the war. The White House dismisses Israel’s protests that the PA supports terrorism and is too feeble to resist Hamas as domestic political pandering. The only way to defeat Hamas in Gaza, says the U.S., is to hand the keys to Mahmoud Abbas and a “revitalized" PA. Good thing Israel didn’t take Secretary of State Antony Blinken’s word for it. On Tuesday the PA’s many factions signed an agreement with Hamas and Islamic Jihad to form a unity Palestinian government. Oh, and they did it in Beijing,...