Russia has been aggressing Ukraine for four years

Sources

• SecondaryReuters - Timeline of events leading to Russia's invasion of UkraineRussia launched a large-scale invasion of Ukraine on Feb. 24, 2022
• SecondaryUK Parliament Commons Library - Conflict in Ukraine: A timelineTimeline of the major events that happened in the conflict in Ukraine since the 2022 Russian invasion starting February 2022
• TertiaryWikipedia - 2022 Russian invasion of UkraineOn 24 February 2022, during the Russo-Ukrainian war, Russia launched a full-scale invasion of Ukraine