CLIO CHANG and RYAN GRIM – The senate vote this month to end U.S. support for the war in Yemen marked a historic break from a bipartisan embrace of a pro-war foreign policy, yet it was accomplished without strong backing from Washington’s liberal foreign policy infrastructure. The resolution, co-sponsored by Sens. Bernie Sanders, I-Vt., Mike Lee, R-Utah, and Chris Murphy, D-Conn., invokes the rights laid out in the War Powers Act of 1973 that assert Congress’s authority over war, and it was the result of many months of work by a coalition of progressive activists and anti-war lawmakers. The war is Saudi-led, but the U.S. has provided critical support, and an end to that support effectively means an end to the war.