U.S. support for the Saudi coalition fighting in Yemen has long been a deadly headache for Washington, rife with U.S.-backed airstrikes targeting civilians and a spiraling crisis of starvation. And as a CNN report published Monday makes clear, U.S. weapons sold to allies have now ended up in the hands of al Qaeda and Iranian-backed militants.

Enough is enough. An end of U.S. support for the Saudi coalition in Yemen is long overdue.