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WASHINGTON, USA - APRIL 6: NATO Secretary General Jens Stoltenberg speaks on the state of affairs with NATO during the Atlantic Council at the Ritz Carlton in Washington, USA on April 6, 2016. (Photo by Samuel Corum/Anadolu Agency/Getty Images)

WASHINGTON, USA - APRIL 6: NATO Secretary General Jens Stoltenberg speaks on the state of affairs with NATO during the Atlantic Council at the Ritz Carlton in Washington, USA on April 6, 2016. (Photo by Samuel Corum/Anadolu Agency/Getty Images)