クリミア危機・ウクライナ東部紛争

The Russo-Ukrainian war is an ongoing conflict that began in 2014 when Russia annexed Crimea and supported separatist groups in eastern Ukraine, then escalated dramatically in February 2022 when Russia launched a full-scale invasion of the country. The war matters because it has caused a major refugee crisis, hundreds of thousands of deaths, and represents Europe's largest conflict since World War II.

AI-generated from the Wikipedia summary — may contain errors.