"We'll Do It Live!"

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Republican presidential candidate Donald Trump, left, signs his book for Bill O'Reilly, right, during his appearance on Fox's news talk show "The O'Reilly Factor."

Bill O'Reilly was the bombastic, blustery face of Fox News. Now that he's out, what happens to the identity and future of the channel? Plus, how to read the scary headlines about US-North Korea relations; why erratic foreign policy can be effective foreign policy; how China sees Trump; and what role do referendums really have in shaping our democracy?