MOSCOW (Sputnik) - Russian President Vladimir Putin said on Monday that the terrorist attack at the Crocus City Hall concert venue near Moscow had been committed by radical Islamists. "We know that the crime was committed by the hands of radical Islamists, whose ideology the Islamic world itself has been fighting for centuries," Putin said. Even though Russia knows who carried out the terrorist attack in the Crocus concert hall, but the mastermind behind it is still in question, and we need to find out whether radical Islamists really decided to strike at the country, the Russian president said. "In...