Is Russia's invasion of Ukraine justified?

Short answer: No. Under international law and most ethical frameworks, Russia’s full‑scale invasion of Ukraine (launched February 24, 2022) is not justified.

Why:

•The UN Charter forbids the use of force against another state’s territorial integrity or political independence (Article 2(4)). The only clear exceptions are UN Security Council authorization or self‑defense against an armed attack (Article 51). There was no Security Council authorization, and Ukraine did not launch an armed attack on Russia.

•Russia’s stated grounds—self‑defense on behalf of the “DPR/LPR,” preventing “genocide,” “denazification,” or preempting a NATO threat—do not meet recognized legal thresholds. Recognizing separatist entities does not create a lawful right to collective self‑defense against the state they belong to; claims of genocide were rejected as a legal basis by the International Court of Justice in its provisional measures order of March 16, 2022; and anticipatory self‑defense requires an imminent attack, not a generalized security concern.

•The UN General Assembly, in multiple resolutions beginning March 2, 2022, condemned the invasion as aggression and demanded Russia’s withdrawal—reflecting a broad international consensus.

•Attempts to annex occupied Ukrainian territory violate the principles of territorial integrity and self‑determination.

•In just‑war ethics (jus ad bellum), the invasion fails core tests of just cause, right authority, last resort, and proportionality.

If you’d like, I can pull the specific UN and ICJ documents so you can read the primary sources.

Is Russia's invasion of Ukraine justified?

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