Attack on Guyana or Exxon would be 'bad day' for Venezuela, Rubio warns

Open this photo in gallery: U.S. Secretary of State Marco Rubio gestures as he boards an aircraft en route to Suriname at Cheddi Jagan International Airport in Georgetown, Guyana, on March 27.Nathan Howard/The Associated Press U.S. Secretary of State warned Venezuela on Thursday that it would be "a very bad day" for the South American country if it were to attack its neighbour Guyana or U.S.-based energy giant ExxonMobil, in comments that threatened unspecified action in such a case. Caracas condemned Rubio's remarks, made during a visit to Guyana's capital. Guyana and Venezuela are locked in a long-running dispute about…