Was it illegal for Russia to invade Ukraine in February 2022?

Less Validated
Feb 28, 22

It is legal for other countries to support the Ukraines’ self-defence countermeasures.

According to section 51 of the UN charter, members can use collective self-defence countermeasures to maintain peace and security. But other countries must immediately report these individual or collective self-defence measures to the UN Security Council.

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