One of the most crucial studies describing the changes is the analysis of Seth G. Jones "The Evolution of Irregular Warfare" (in: *War and the Modern Battlefield*, Chapter 12, CSIS, 2025). The CSIS author points out that irregular activities include a wide scope of activities specified as diversion, sabotage, partisan activities, support for proxy groups, cyber attacks, information operations, terrorism, impact campaigns, hostage taking and intelligence activities aimed at disrupting the functioning of the opposing states. Importantly, the paper stresses that irregular war has ceased to be the domain of the weaker – in fact it has become the preferred tool of the powers that strive to accomplish political advantage while maintaining a space of negativity and cost reduction.