Russia has detained 11 people in connection with a terrorist attack Friday evening at Crocus City Hall in Krasnogorsk, a suburb of Moscow. Russian President Vladimir Putin said in a televised speech that among the 11 were all four gunman suspected of carrying out what Reuters called a “shooting massacre.” “They tried to hide and moved towards Ukraine, where, according to preliminary data, a window was prepared for them on the Ukrainian side to cross the state border,” Putin said. Neither Putin nor Russia’s FSB security service has provided any evidence to the public of a link between the accus…