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Sergey Kislyak, Russian Ambassador to the US, listens as Phebe Novakovic, Chairman and CEO of the General Dynamics Corporation, speaks during a meeting of the Economic Club of Washington May 19, 2016 in Washington, DC. / AFP / Brendan Smialowski        (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Sergey Kislyak, Russian Ambassador to the US, listens as Phebe Novakovic, Chairman and CEO of the General Dynamics Corporation, speaks during a meeting of the Economic Club of Washington May 19, 2016 in Washington, DC. / AFP / Brendan Smialowski        (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)

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    Controversial Russian ambassador leaving US

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Controversial Russian ambassador leaving US

The Russian ambassador to the US Sergey Kislyak, at the center of a political firestorm over his encounters with associates of President Donald Trump, is leaving his post -- but Russia says the move is not unexpected. CNN's Brian Todd reports.

Controversial Russian ambassador leaving US

The Russian ambassador to the US Sergey Kislyak, at the center of a political firestorm over his encounters with associates of President Donald Trump, is leaving his post -- but Russia says the move is not unexpected. CNN's Brian Todd reports.