In this Sept. 21, 2016 file photo, former Israeli Prime Minister Ehud Barak smiles during a lecture at the John F. Kennedy School of Government at Harvard University in Cambridge, Mass. (AP Photo/Charles Krupa< File)
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In this Sept. 21, 2016 file photo, former Israeli Prime Minister Ehud Barak smiles during a lecture at the John F. Kennedy School of Government at Harvard University in Cambridge, Mass. (AP Photo/Charles Krupa< File)
