By Dave Sherwood HAVANA (Reuters) – The U.S. State Department denied on Tuesday it was plotting violent attacks against Cuba, a day after the Communist-run island claimed Washington was seeking to foment unrest before the New Year. Cuba’s Interior Ministry on Monday warned on social media of “plans by the State Department and intelligence community to increase subversive and violent attacks against Cuba in order to generate a social outbreak before the end of 2023.” A State Department official rejected the idea. “Allegations that the United States is encouraging violent actions against the Cub…