While the use of disinformation as a weapon has always existed, the development of information and communication technologies has greatly simplified it in modern armed conflicts. The topic of NATO enlargement has been significantly overblown with false reports, although it has had its dossier of false information refutation. It is widely perceived as an irritant in NATO-Russia relations. To understand the essence of Russian-Ukrainian relations, the topic of “NATO enlargement” is a false context used as a separate type of disinformation.