What Is Hybrid Warfare? Origins, Doctrine and Crimea

What is hybrid warfare has been one of the most frequently asked questions in strategic debate since the mid-2000s: it refers to a mode of conflict in which a single actor combines, simultaneously and in coordinated fashion, conventional military means, irregular tactics, cyberattacks, disinformation, economic pressure and the use of proxy forces or unmarked 'little green men', with the aim of achieving strategic effects while staying below the threshold that would trigger a clear military response from the adversary.

The origin of the term: Frank Hoffman, 2007

The concept is mainly attributed to the American analyst Frank G. Hoffman, who in his monograph Conflict in the 21st Century: The Rise of Hybrid Wars (2007) described 'hybrid threats' as the fusion of conventional, irregular, terrorist and criminal modes of warfare carried out by the same actor simultaneously in the same battlespace. Hoffman drew on his analysis of the 2006 Lebanon war, in which Hezbollah combined state-like territorial defence with guerrilla tactics, precision rockets and a sophisticated communications campaign. Before Hoffman, authors such as William Nemeth had already used the phrase 'hybrid war' in 2002 to describe the Chechen conflict.

The so-called 'Gerasimov doctrine'

In 2013, the chief of the Russian General Staff, Valery Gerasimov, published an article in the journal Voyenno-Promyshlennyi Kurier titled 'The Value of Science Is in the Foresight', in which he reflected on how modern conflicts blur the line between war and peace and give greater weight to non-military means — information, economics, political subversion — relative to conventional weapons. The text was translated and popularised in the West by the analyst Mark Galeotti under the label 'Gerasimov doctrine', a term that achieved enormous media traction after the annexation of Crimea in 2014.

A disputed label

Galeotti himself publicly acknowledged, in a 2018 article titled 'I'm Sorry for Creating the Gerasimov Doctrine', that the phrase was a misinterpretation: Gerasimov was describing how Russia perceived the West as waging war (citing the Arab Spring and the colour revolutions), not laying out a Russian offensive plan. Much of the academic community — including Bettina Renz and Ofer Fridman — argues that no formal Russian military doctrine by that name exists, and that attributing a coherent master plan to Russian action in Crimea or the Donbas oversimplifies a reality that was more improvised and opportunistic.

Crimea 2014: the reference case

Russia's annexation of Crimea in February-March 2014 became the most cited example of contemporary hybrid warfare. Troops without identifiable insignia — the so-called 'little green men', later confirmed as Russian forces by President Vladimir Putin himself — seized key installations on the peninsula while an internationally unrecognised annexation referendum was held. The operation was combined with an intense disinformation campaign in Russian state media, low-level cyberattacks against Ukrainian infrastructure and economic pressure on Kyiv, all carried out swiftly and with deliberate ambiguity to hinder a coordinated Western response.

Common components of hybrid warfare

• Cyber operations against critical infrastructure, power grids or financial systems.
• Disinformation and propaganda campaigns in the media and on social networks to shape public perception.
• Economic pressure: sanctions, energy cut-offs or market manipulation.
• Use of proxy forces, mercenaries or units without official identification (plausible deniability).
• Political subversion and electoral interference in the target country.
• Combination with conventional military means when necessary.

The academic debate over its usefulness

Not all specialists accept that 'hybrid warfare' is an analytically useful concept. Critics such as Damien Van Puyvelde have argued that the term lumps together very different phenomena under a single eye-catching label, which hinders rather than aids rigorous analysis, and that many of its components — propaganda, proxies, economic sabotage — have existed for centuries without requiring a new category. Others, such as the RAND Corporation think tank, argue that the term remains useful precisely because it captures the deliberate exploitation of ambiguity and the grey zone between peace and open war, a feature increasingly relevant to great-power competition.