GERRY ADAMS has been summoned to appear before a Congressional hearing into the IRA’s involvement with the terrorist group Farc, the Revolutionary Armed Forces of Colombia. Mr Adams, the president of Sinn Fein, has been told to attend a hearing on Capitol Hill next month and prepare to answer the question: “What did you know and when did you know it?” The hearing has been called after outrage in the United States over the discovery last year of three IRA suspects in the area of Colombia controlled by Farc. Jim Monaghan, Martin McCauley and Niall Connolly have been charged with...