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Russia-Ukraine War: Key Events Since the 2014 Annexation of Crimea

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Russia-Ukraine War: Key Events Since the 2014 Annexation of Crimea

KYIV, July 16 — On paper, the Minsk agreements were supposed to freeze the conflict. Signed in September 2014 and again in February 2015, they promised a ceasefire. The catch: they never delivered one, and the underlying mechanics of the war only tightened.

The Russo-Ukrainian War did not begin with the 2022 invasion. It started in February 2014, when Russia annexed Crimea in the immediate aftermath of the Euromaidan revolution, which had ousted pro-Russian President Viktor Yanukovych.

By April of that year, Russian-backed separatists had seized territory in Ukraine’s Donbas region, triggering the war in Donbas. The Minsk agreements were the diplomatic attempt to stop the bleeding. They failed.

Then came February 24, 2022, when Russia launched a full-scale invasion. Western intelligence and the United Nations now estimate over 500,000 military casualties on both sides, plus tens of thousands of civilian deaths.

The numbers are staggering, but the mechanics behind them are worth dissecting. Follow the money, and the sanctions regime comes into focus. The United States, the European Union, and allied nations have imposed sweeping penalties targeting Russian banks, energy exports, and individuals close to President Vladimir Putin.

The goal: starve the war machine. The effectiveness remains an open question, but the pressure points are clear. Key battles defined the conflict’s trajectory.

The defense of Kyiv, from February to April 2022, stopped the initial Russian advance. The Battle of Mariupol, from February to May 2022, became a symbol of urban destruction.

Ukrainian counteroffensives in Kharkiv in September 2022 and Kherson in November 2022 shifted momentum. Each phase carried its own logic of attrition and supply lines. As of December 2024, Russia occupies approximately 18 percent of Ukrainian territory.

That includes Crimea and parts of Donetsk, Luhansk, Zaporizhzhia, and Kherson oblasts. The human displacement is enormous: over 8 million Ukrainians internally displaced, and more than 6 million forced to flee abroad.

Those are not abstract figures; they represent a structural shift in Europe’s demographic map. On closer reading, the war’s timeline reveals a pattern of escalation followed by grinding stalemate. The full-scale invasion marked the largest conventional military attack in Europe since World War II.

That fact alone should frame any analysis of the current balance of power. What to watch next: whether the sanctions architecture holds as energy markets adjust, and whether the occupied territories remain a frozen conflict or become a launchpad for renewed offensives. The numbers on the ground — the casualties, the displaced, the occupied land — will dictate the next move.

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