The question of whether Russia’s invasion of Ukraine is justified is a central issue in modern global politics. While the overwhelming majority of the international community, international legal bodies, and independent observers view the invasion as an unprovoked, illegal act of aggression, the Russian government has presented its own set of justifications.
Below is an overview of the primary arguments from both sides of the issue, as well as the perspective of international law.
The Argument That the Invasion Is Unjustified
This perspective is held by Ukraine, its Western allies, the United Nations General Assembly, and the vast majority of international legal scholars and global governments.
•Violation of International Law and Sovereign Borders: Critics point out that Ukraine is a sovereign, independent nation whose borders were officially recognized by the international community—including Russia—when the Soviet Union dissolved in 1991. Furthermore, under the 1994 Budapest Memorandum, Ukraine agreed to give up its nuclear arsenal (then the third-largest in the world) in exchange for explicit guarantees from Russia, the United States, and the United Kingdom to respect its independence, sovereignty, and existing borders.
•The UN Charter: The invasion is widely viewed as a direct violation of Article 2(4) of the United Nations Charter, which prohibits the threat or use of force against the territorial integrity or political independence of any state. The UN General Assembly has repeatedly voted by overwhelming majorities to condemn the invasion and demand the immediate withdrawal of Russian forces.
•Right to Self-Determination: Proponents of this view argue that as an independent nation, Ukraine has the sovereign right to determine its own foreign policy, including whether to seek membership in international organizations like the European Union or NATO.
•Refutation of Russian Pretexts:
•"Denazification": International observers and historians widely reject Russia's claim that Ukraine is run by a neo-Nazi regime. They point out that Ukraine is a democratic country with a Jewish president, Volodymyr Zelenskyy, and that far-right political parties have consistently failed to win significant representation in the Ukrainian parliament.
•"Genocide" in Donbas: Prior to the 2022 invasion, Russia claimed that Ukraine was committing "genocide" against Russian speakers in the Donbas region. Independent monitoring missions, such as those conducted by the Organization for Security and Co-operation in Europe (OSCE), found no evidence to support this claim.
The Arguments Presented by the Russian Government
This perspective is maintained by the Kremlin and supported by Russian state media, as well as a small number of allied nations.
•NATO Expansion and Security Dilemmas: Russia’s primary security argument is that the eastward expansion of NATO poses an existential threat. The Russian government argues that Western powers broke informal promises made at the end of the Cold War not to expand NATO toward Russia’s borders. Russia views the prospect of Ukraine joining NATO—which would bring Western military infrastructure directly to its border—as a "red line."
•Protection of Russian-Speaking Populations: The Kremlin asserted that its military action (which it officially termed a "special military operation") was necessary to protect the Russian-speaking population of the Donbas region in eastern Ukraine. Russia claimed these populations were facing systematic persecution, violence, and shelling by the Ukrainian government following the 2014 Maidan Revolution.
•Historical and Cultural Claims: Russian President Vladimir Putin has frequently argued that Russians and Ukrainians are "one people" and that Ukraine is historically and culturally inseparable from Russia. From this viewpoint, Ukraine's post-2014 alignment with the West is viewed as an artificial division of historically Russian lands.
•Demilitarization: Russia argued that Ukraine was being heavily armed by Western nations, turning it into an "anti-Russia" military outpost on its border, necessitating a pre-emptive strike to demilitarize the country.
The Stance of International Courts
International judicial bodies have overwhelmingly rejected Russia's justifications:
•The International Court of Justice (ICJ): In March 2022, the ICJ (the principal judicial organ of the UN) ordered Russia to immediately suspend its military operations. The court rejected Russia’s justification that the invasion was necessary to prevent a "genocide" in eastern Ukraine, stating there was no evidence of such an event occurring.
•The International Criminal Court (ICC): The ICC has issued arrest warrants for Russian officials, including Vladimir Putin, over alleged war crimes, specifically the unlawful deportation and transfer of children from Ukraine to Russia.
Conclusion
From a legal and international consensus perspective, the invasion is considered entirely unjustified, representing a violation of international law, the UN Charter, and bilateral treaties.
From the Russian government's perspective, the invasion is framed as a defensive and preemptive measure to neutralize a national security threat posed by NATO expansion, to protect Russian-speaking minorities, and to reassert historical claims in the region.