The war in Ukraine surpassed the duration of World War I on Thursday, marking more than 1,569 days—over four years and three months—since Russia's invasion began in February 2022. When Russian President Vladimir V. Putin ordered troops into Ukraine, expectations in Moscow anticipated a swift victory, with Kyiv falling within days. However, Ukrainian forces successfully repelled initial advances, and the conflict has since evolved into a protracted war of attrition.

Many combatants acknowledge that the war’s length has exceeded early predictions. A Ukrainian soldier, speaking under the call sign France, reflecting his background in the French Foreign Legion, said he initially expected the conflict to last two or three years before political solutions would emerge. Instead, peace negotiations have stalled, and the fighting shows little sign of abating.

Public opinion in Ukraine reflects the prolonged uncertainty. Recent polls indicate that roughly half of Ukrainians do not expect the war to conclude before next year. Should the conflict continue into 2025, it would approach the length of World War II, which spanned six years.

Some Ukrainians consider the current war as having roots in 2014, when Russia annexed Crimea, signaling a broader conflict that predates the large-scale invasion in 2022. This perspective highlights the enduring geopolitical tensions in the region.

Historians urge caution in drawing direct comparisons between the Ukraine war and the two world wars. The global scope, multiple theaters of combat, and scale of forces and casualties in World War I and World War II set them apart from the more regionally contained conflict in Ukraine. Additionally, the modern Ukrainian state did not exist during World War I, complicating direct historical parallels.

Nonetheless, experts agree that the war in Ukraine is likely to become one of the most significant conflicts in modern European history. Yaroslav Hrytsak, a Ukrainian historian, noted that similar to World War I, the war has already reshaped Europe’s geopolitics and military alliances, with lasting implications for the region’s security landscape.