Social media users are playing a key role in geopolitical contests the world over, from publicizing Russian troop movements on the Ukraine border to picking winners at the Oscars next month in Los Angeles. And John Oliver makes his triumphant return to the Ed Sullivan Theater for a three-part interview that kicks off with the “Last Week Tonight” host telling Stephen how much he adores blowing stuff up on his show. Season nine of “Last Week Tonight” begins this Sunday on HBO.
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