On Friday, as three U.S. destroyers headed towards waters off of Venezuela and President Nicolás Maduro mobilized 4.5 million militiamen in response, Secretary of State Marco Rubio posted a one-word tweet: “#Guyana.” The post included a screenshot of a statement from the Guyanese government, which echoed concerns from Washington about Venezuelan transnational organized crime, all but offering support for the military escalation. Those concerns are based on the debunked assertion that Mad...