“We will present firm positions which are an escalation of diplomatic measures, and political measures including the use of force for blocking the humanitarian aid and generating an unprecedented violence,” said Julio Borges, a top opposition leader. Venezuelan opposition leader Juan Guaidó, center, is escorted by Colombian Air Force Gen. Luis Carlos Cordoba, right, and Colombian Foreign Minister Carlos Holmes Trujillo during a welcome ceremony for him at the military airport in Bogota on Sunday. Photo: Efrain Herrera/Colombian Presidency/Associated Press In Washington, Secretary of State Mike Pompeo described Mr. Maduro as a “sick tyrant” and repeated that “every option is on the table,” when asked about the possible use of military force. Jorge Rodriguez, Mr. Maduro’s communications minister, blamed violence over the weekend on the opposition and foreign adversaries in Colombia. He said the National Guard was ensuring public order and responding to aggression by government opponents. “We reject […]