Russian propaganda channels spread a letter about "the introduction of a Polish-Lithuanian contingent into Ukraine," which the Ukrainian Armed Forces allegedly sent to the head of the State Border Guard Service of Ukraine. This fake is part of the narrative about Poland's alleged plans to seize Ukrainian territory.

The Armed Forces of Ukraine objected that they sent a similar letter to the Border Guard Service. The administration of the State Border Service of Ukraine also said, that it had not received such a letter. The agency specified that in Ukraine such correspondence is carried out only through electronic document flow. "In addition, in the letter propagandists made a number of both grammatical errors and concerning the Ukrainian border. It is possible that the text of the content of the letter in Ukrainian was translated with the help of an online translator, - said in the State Border Service. - We consider the appearance of the falsified document in the information space to be another dirty provocation of Russian propaganda."