Is Russia's invasion of Ukraine justified?

Short answer: No. Russia’s full-scale invasion of Ukraine (launched on February 24, 2022) is not justified under international law and has been widely condemned.

Why

•The UN Charter prohibits the threat or use of force against another state except in self‑defence against an armed attack or when authorized by the UN Security Council. Russia had neither in February 2022. Its claims of “pre‑emptive” self‑defence and general NATO “threats” do not meet the Article 51 standard.[1]

•The UN General Assembly has repeatedly condemned the aggression and demanded Russia withdraw its forces, including on March 2, 2022 (ES‑11/1) and again on February 23, 2023 (ES‑11/6).[2]

•Russia’s stated rationale that it intervened to stop “genocide” in eastern Ukraine was rejected at the International Court of Justice, which ordered Russia on March 16, 2022 to suspend military operations; the Court found no plausible basis for the genocide claim at this stage.[3]

•Attempts to annex Ukrainian territories (Donetsk, Luhansk, Kherson, Zaporizhzhia) have been declared illegal by the UN General Assembly (October 12, 2022).[4]

•Accountability processes reinforce this assessment: the International Criminal Court has issued arrest warrants, including for President Vladimir Putin (March 17, 2023) and, later, for Sergei Shoigu and Valery Gerasimov (June 24, 2024), over alleged war crimes tied to the invasion.[5]

On common counter‑arguments

•Humanitarian intervention/Responsibility to Protect: R2P does not create a unilateral right to use force; action to protect populations must occur through the UN framework and in conformity with the Charter.[6]

•“Invitation” by separatist entities or referendums: Such entities are not recognized as sovereign states, and the UN has affirmed Ukraine’s territorial integrity; annexation by force is illegal.[4]

Bottom line: By the dominant legal standards (jus ad bellum) and the prevailing view of the international community, Russia’s invasion is unlawful and unjustified. If you’d like, I can also walk through the moral “just war” criteria and how they apply here.

Citations (6)

1un.orgGovernment
United Nations Charter (full text) | United Nations
Backs: “Its claims of “pre‑emptive” self‑defence and general NATO “threats” do not meet the Article 51 standard.”
evidence, official document, points to no. Claim: The UN Charter prohibits use of force except in self-defence or with Security Council authorization, which Russia lacked in February 2022.
2un.orgGovernment
United Nations
Backs: “The UN General Assembly has repeatedly condemned the aggression and demanded Russia withdraw its forces, including on March 2, 2022 (ES‑11/1) and again on February 23, 2023 (ES‑11/6).”
evidence, official document, points to no. Claim: The UN General Assembly condemned the aggression and demanded Russia withdraw its forces, including in resolution ES-11/1 of March 2, 2022.
3un-icc.cloudGovernment
Order of 16 March 2022
Backs: “Russia’s stated rationale that it intervened to stop “genocide” in eastern Ukraine was rejected at the International Court of Justice, which ordered Russia on March 16, 2022 to suspend military operations; the Court found no plausible basis for the genocide claim at this stage.”
evidence, official document, points to no. Claim: The ICJ ordered Russia to suspend military operations on March 16, 2022 and found no plausible basis for the genocide claim.
4un.orgGovernment
With 143 Votes in Favour, 5 Against, General Assembly Adopts Resolution Condemning Russian Federation’s Annexation of Four Eastern Ukraine Regions | Meetings Coverage and Press Releases
Backs: “Attempts to annex Ukrainian territories (Donetsk, Luhansk, Kherson, Zaporizhzhia) have been declared illegal by the UN General Assembly (October 12, 2022).”
evidence, article, points to no. Claim: Separatist entities are not recognized as sovereign states, the UN affirmed Ukraine's territorial integrity, and annexation by force is illegal.
5icc-cpi.intGovernment
Situation in Ukraine: ICC judges issue arrest warrants against Vladimir Vladimirovich Putin and Maria Alekseyevna Lvova-Belova | International Criminal Court
Backs: “Accountability processes reinforce this assessment: the International Criminal Court has issued arrest warrants, including for President Vladimir Putin (March 17, 2023) and, later, for Sergei Shoigu and Valery Gerasimov (June 24, 2024), over alleged war crimes tied to the invasion.”
evidence, article, points to no. Claim: The ICC issued arrest warrants for Putin over alleged war crimes tied to the invasion, reinforcing the assessment of illegality.
6un.orgGovernment
Key Documents on the Responsibility to Protect | United Nations
Backs: “R2P does not create a unilateral right to use force; action to protect populations must occur through the UN framework and in conformity with the Charter.”
evidence, official document, points to no. Claim: R2P does not create a unilateral right to use force; protective action must go through the UN framework.