The claim that Russia has a revisionist approach to international order has resounded in Western capitals since Crimea was annexed in 2014an act which overturned the basic prohibition against states reverting to wars of territory or the use of force to expand their territorial sphere. In such official language revisionism is defined as a challenge to a 'rules-based' approach to the international system. Since norms and rules are ultimately vested in international law, which is contested but still the foundation of global order, this leads to important questions for scholarly analysis about contemporary Russian attitudes to international law. Is Russia seeking to change certain fundamental rules of global order, a form of legal revisionism?, and what role has Russia assigned to discourse on international law since 2014? These questions are part of a broader enquiry whether Russia can be defined as revisionist in ways beyond rule-breaking or rule-making. This article contributes to an evolving debate on these questions by reviewing the initial post-2014 scholarly findings about the Russian use of legal discourse and examining further Russian official views on the role of rules and international law during 2014-19. It assesses the ways in which and purposes to which Russia has deployed such legal language more specifically in continued clashes around the regional conflicts in Ukraine and Syria. It seeks to clarify the limits of Russian revisionism as an intellectual category related to international law and rules. The focus of study is on the rules governing the use or the threat of use of force in these conflicts, since these lie at the apex of a hierarchy of legal constraint on state conduct and have generated the most significant body of justificatory discourse, of claims and counter-claims by Russia and other states.A premise of our analysis is that principles of international law and discourse around them matters. These principles, as expressed in foundational documents such as the UN Charter, interpretations of customary law and international judicial opinion, opinio juris, are central to the language of diplomacy and the way states interact.They constrain and enable state action, even if occasionally and controversially powerful states break rules. They provide a normative framework which regulates interstate competition. However, rules and power are interrelated and legal discourse can be deployed for strategic ends. Arguably Western concern over Russian efforts to justify its post-2014 rule-breaking ultimately rests on a belief that these Russian claims are part of an effort to reorder the balance of structural power in Europe, the Middle East and more widely. It is this wider geopolitical or realist interpretation of revisionism, focused on the outcome and intentions of rule-breaking, which sustains the use of the term among Western officials and practitioners.Analysis of such structural logic lies beyond the main concerns of this article. However, we show how the strategic use of legal discourse by Russia...