As World Beyond War notes, during his 2016 presidential campaign, Vermont Senator Bernard Sanders was eerily silent on the subject of foreign & military policy. His website said very little on the topic, particularly about the Middle East. This was a canny calculation, betting that voters were mostly interested in bread & butter issues (see Bill "It's the Economy, Stupid!" Clinton, 1992).
Bernie & friends also knew that any talk of Israel—especially criticism, no matter how politely phrased—is a third rail that sitting US Senators must avoid. He may be making some noise at the Capitol about ending US involvement in Yemen, but only under pressure from his constituents and supporters. It took Chris Murphy (D-CT) to bring it up in the Senate—and, even then, only when Barack Obama was no longer Commander-in-Chief.
I have admired & respected Bernie since he was mayor of Burlington. However, this reticence on his part was one of several reasons I could not support his campaign.
Way back in 1967, Dr. Martin Luther King identified militarism and military spending as a grand theft from the people. Several years before that, President Dwight D. Eisenhower said something similar on national television. Why have mainstream politicians, even the progressive ones, lost sight of that undeniable fact?