Fatah, the ruling party of the Palestinian Authority (P.A.) and the largest faction of the Palestine Liberation Organization (PLO), routinely incites terrorism in all forms of its media, propagandizes Palestinian students to commit acts of terrorism, devotes a large portion of its finances to pay terrorists and their families, and names many of its schools and roads after terrorists who have murdered civilians. President Trump and Congress have rightly demanded a halt to Fatah’s activities promoting terrorism, including the P.A. halting all payments to terrorists and their families, but to no avail. To enable peace between Israel and the Palestinians, the U.S. must therefore immediately issue an ultimatum to Mahmoud Abbas and the P.A.: either cease funding, incitement, and indoctrination to terrorism in all forms, forthwith, or be designated as a foreign terrorist organization, with all the ramifications that pertain to that designation.