Aerial photographs reveal considerable damage caused to a military airfield in central Syria from an Islamic State attack. In photos released by the Stratfor intelligence firm, four helicopters and 20 charred trucks can be seen at the T4 base, which serves the Russian army. The photos show the airfield on May 14, before the strike, and on May 17, after the airfield was hit.
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Despite the evidence that Russian equipment was hit, Moscow issued a statement denying reports that the T4 base, which is about 60 kilometers from the city of Palmyra, was attacked. Commentators said the attack on the airfield appears to have caused the most serious damage that Russia has sustained in the military operation that it has been waging in Syria since September 2015.