What we know -- and don’t -- about Donald Trump Jr.’s meeting with a Russian lawyer

President Donald Trump returned Friday from Paris to new questions about whether his campaign sought damaging information on Hillary Clinton from Russia. Among the uncertainties: How many people were at a June 2016 meeting with Donald Trump Jr. and Russian officials at Trump Tower? And when did the president know? John Yang reports. Then, Judy Woodruff gets the latest from the AP’s Julie Pace.

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