When he stepped down in January 2017 as the fourth United States Director of National Intelligence, James Clapper had been President Obama's senior intelligence adviser for six and a half years, longer than his three predecessors combined. He led the U.S. intelligence community through a period that included the raid on Osama bin Laden, the Benghazi attack, the leaks of Edward Snowden, and Russia's influence operation during the 2016 U.S. election...