Answer:
International Regime Theory refers to the set of rules, norms, and principles that guide the behavior of states in international relations. It plays a significant role in the Ukraine war in the following ways:
1) Non-Interference Principle: The international regime of non-interference in the internal affairs of other states has been challenged during the Ukraine war. Russia's annexation of Crimea in 2014 and its intervention in the conflict in eastern Ukraine have been seen as violations of this principle. The international community has condemned Russia's actions and imposed sanctions against it.
2) Humanitarian Norms: The international regime of protecting human rights and promoting humanitarian norms has also been under strain during the Ukraine war. Reports of human rights abuses, including extrajudicial killings, torture, and arbitrary detention, have been documented by international organizations. The conflict has also displaced over a million people, resulting in a humanitarian crisis. The international community has provided aid to alleviate the suffering of the affected population.
In summary, the International Regime Theory has played a significant role in shaping the response of the international community to the Ukraine war. It has provided the framework for assessing the legality and legitimacy of state actions and for promoting human rights and humanitarian norms.