Is Russia's invasion of Ukraine justified?

Short answer: No. Under international law, Russia’s full‑scale invasion of Ukraine on February 24, 2022 is not justified.

Why:

•UN Charter: Article 2(4) prohibits the use of force against another state. The only clear exceptions are UN Security Council authorization or self‑defense against an actual or imminent armed attack (Article 51). Neither applies here.

•“Self‑defense/collective defense” claim: Recognizing separatist regions (the so‑called DPR/LPR) does not create a lawful defense pact, they are not widely recognized as states, and Ukraine had not launched (nor threatened) an armed attack on Russia that would meet the imminence standard.

•“Humanitarian intervention/genocide prevention” claim: Independent bodies found no credible basis for a genocide in Donbas; the International Court of Justice ordered Russia on March 16, 2022 to suspend military operations while that case proceeds—signaling the claim was not plausibly justified.

•Global response: Multiple UN General Assembly resolutions since March 2022 have condemned the invasion as aggression and affirmed Ukraine’s sovereignty and territorial integrity.

Context often cited in defense (NATO expansion, Minsk accords, protection of Russian speakers) may explain Russia’s grievances, but they do not supply a legal casus belli.

If you’d like, I can share key sources or lay out the strongest pro/con arguments for a debate or paper.

Is Russia's invasion of Ukraine justified?

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