Lawmakers are debating the legality of the U.S. military action in Venezuela. Some say the blowing up of at least 10 vessels amounts to extrajudicial killings. The Trump administration insists they are lawful and in “self-defense.” Meanwhile, Admiral Alvin Holsey, the head of U.S. Southern Command and the military officer in charge of all Caribbean activity, suddenly stepped down — two years ahead of schedule and without offering an explanation — raising more questions about the Trump administra