A heavyweight right-wing financier has thrown in with a left-right coalition to end the U.S. military’s involvement in the Saudi-led war on Yemen, one of the world’s most devastating humanitarian catastrophes, The Daily Beast has learned. The Charles Koch Institute, bearing the brand of one of the most influential sources of conservative political money, is backing an effort spearheaded by progressive California Democrat Ro Khanna to demand either an end to non-counterterrorism aid to the Yemen war or a direct congressional vote authorizing it. Multiple congressional and allied sources told The Daily Beast they plan to bring their resolution to...