Officials say concealed Russian maritime operations pose immediate threats that may justify proportionate self-defence measures under international law. Kyiv is gathering evidence to support legal actions and to limit escalation.

Ukraine states that it has the legal means to respond to Russia’s actions, notably against the shadow fleet that operates outside official visibility and poses a threat to the state’s security. Such language underscores the use of self-defense principles in international law and the need to counter aggression by a subset of armed formations that are not openly documented forces.

Legal basis for actions

Ukrainian lawyers emphasize the possibility of applying the right to self-defense in accordance with the Charter of the United Nations. They point to the need to assess the substantiation of threats, proportionality, and the objectives that arise from responding to aggression. In the case of the shadow fleet, the assertion is that covert operations and the use of hidden forces can create an immediate threat that justifies Ukraine’s response under international law.

What is the shadow fleet?

The term denotes Russian intelligence, naval, or air assets that operate outside public demonstration and may involve various kinds of equipment and units. Ukraine has repeatedly indicated that control over such assets could be part of efforts to maintain security and stability in the region, especially where Russia’s overt actions create indirect threats.

International consequences and reaction

Analysts note that the legitimacy of any actions depends on how clearly defined the threat is, how the response unfolds, and which means are employed. The reaction of the international community can influence the further development of events and the legal assessments by different countries and international institutions.

Prospects and challenges

Despite the legal arguments, the risks of escalation and the impact on civilians remain serious. Ukraine continues to consider all lawful avenues to defend the state and is gathering evidence to justify its steps within international law, while aiming to reduce the potential danger to regional security.

Conclusion

The question of legitimacy of such actions depends on consideration by international institutions and the specific circumstances of each case. Maintaining proportionality, transparency, and a clear justification of threats remains key factors in any future Ukrainian steps in responding to aggression and Russia’s shadow fleet.