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US President Donald Trump shakes hands with US Army Lieutenant General H.R. McMaster (L) as his national security adviser at his Mar-a-Lago resort in Palm Beach, Florida, on February 20, 2017. / AFP / NICHOLAS KAMM
US President Donald Trump shakes hands with US Army Lieutenant General H.R. McMaster (L) as his national security adviser at his Mar-a-Lago resort in Palm Beach, Florida, on February 20, 2017. / AFP / NICHOLAS KAMM

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    Source: McMaster says advising Trump is tough

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Source: McMaster says advising Trump is tough

A source close to national security adviser H.R. McMaster says that McMaster is finding it challenging to advise Donald Trump because there's no telling what the president will say. CNN's Jake Tapper reports.

Source: McMaster says advising Trump is tough

A source close to national security adviser H.R. McMaster says that McMaster is finding it challenging to advise Donald Trump because there's no telling what the president will say. CNN's Jake Tapper reports.