ZAGAN, POLAND - JUNE 18: NATO Secretary General Jens Stoltenberg stands in front of a Leopard tank of the Polish Army while speaking to the media during the NATO Noble Jump military exercises of the VJTF forces on June 18, 2015 in Zagan, Poland. The VJTF, the Very High Readiness Joint Task Force, is NATO's response to Russia's annexation of Crimea and the conflict in eastern Ukraine. Troops from Germany, Norway, Belgium, Poland, Czech Republic, Lithuania and Belgium were among those taking part today. (Photo by Sean Gallup/Getty Images)
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