Armed Ukrainian forces detain a pro-Russian militant in the village of Chornukhine in the Lugansk region on August 18, 2014. A Ukrainian warplane was blown out of the sky over rebel-held territory as fierce clashes between government troops and pro-Russian insurgents left dozens of civilians dead. AFP PHOTO | OLEKSANDR RATUSHNIAK
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Armed Ukrainian forces detain a pro-Russian militant in the village of Chornukhine in the Lugansk region on August 18, 2014. AFP PHOTO | OLEKSANDR RATUSHNIAK
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Armed Ukrainian forces search a car as they detain a pro-Russian militant in the village of Chornukhine in the Lugansk region on August 18, 2014. AFP PHOTO | OLEKSANDR RATUSHNIAK
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Armed Ukrainian forces detain a pro-Russian militant in the village of Chornukhine in the Lugansk region on August 18, 2014. AFP PHOTO | OLEKSANDR RATUSHNIAK
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Armed Ukrainian forces detain a pro-Russian militant in the village of Chornukhine in the Lugansk region on August 18, 2014. AFP PHOTO | OLEKSANDR RATUSHNIAK
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A Ukrainian soldier takes position near the eastern city of Lugansk on August 20, 2014. AFP PHOTO | ANATOLII STEPANOV
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Ukrainian forces on August 20, 2014 in the center of Kiev, during a rehearsal ahead of the Ukraine's Independence Day on August 24, 2014. AFP PHOTO | SERGEI SUPINSKY
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Ukrainian forces march on August 20, 2014 in the center of Kiev, during a rehearsal ahead of the Ukraine's Independence Day on August 24, 2014. AFP PHOTO | SERGEI SUPINSKY
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A Ukrainian soldier with a tattoo depicting Ukraine's state emblem stands as Ukrainian troops take position in a village near the eastern city of Lugansk on August 20, 2014. AFP PHOTO | ANATOLII STEPANOV