President Trump has hastened the withdrawal of American forces from Syria, and is actively seeking to reduce America’s military presence elsewhere in the region, with troop withdrawals under active consideration in countries such as Iraq and Afghanistan.

Terrorism, extremism and radicalism will decline as long as Saudi Arabia’s drive toward reform succeeds. If it does not, the West will suffer. Who says so? Norman T. Roule says so — and he should know.

History is often full of strange ironies. Decades from now, the rise and fall of ISIS will probably be remembered in the same breath as the rise and fall of Kurdish hopes of statehood. That Kurdish aspirations of independence in Syria and Iraq should have suffered the same fate as …