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Pro-Russia militants march on a road after exchanging fire with the Ukranian army near the town of Marynivka, 100 km east of Donetsk, on July 16, 2014. EU leaders met on July 16 to decide on new sanctions against Russia and pro-Moscow separatists in east Ukraine as Kiev raises fears of an imminent invasion by thousands of Russian troops.
Pro-Russia militants march on a road after exchanging fire with the Ukranian army near the town of Marynivka, 100 km east of Donetsk, on July 16, 2014. EU leaders met on July 16 to decide on new sanctions against Russia and pro-Moscow separatists in east Ukraine as Kiev raises fears of an imminent invasion by thousands of Russian troops.

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CNN speaks to Robin Niblett about how the shooting down of 2 Ukrainian military jets affects the Russia-Ukraine crisis.