(Reuters) - Ukrainian President Petro Poroshenko said on Thursday that Russian forces had entered his country and the military conflict was worsening after Russian-backed separatists swept into a key town in the east.
Poroshenko said he was cancelling a visit to Turkey and conferring with defense chiefs because of the "rapidly deteriorating situation" in the eastern Donetsk region, "as Russian troops have actually been brought into Ukraine".
A NATO military officer said: "We assess well over 1,000 Russian troops are now operating inside Ukraine... They are supporting separatists (and) fighting with them."
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