Russia vs Ukraine: Full History of the War and Military Power Comparison

Editor’s note: this article covers an active, ongoing war. Figures and frontline details reflect reporting available in late September 2026 and will shift as the conflict continues. For live updates, check a source like the Institute for the Study of War’s daily assessments.

More than three and a half years after Russia’s full-scale invasion, the war in Ukraine remains the largest conventional conflict in Europe since 1945. It has reshaped global energy markets, NATO’s posture, and how modern militaries think about drones and long-range strikes. Understanding it requires looking both at how the war actually unfolded and at the genuine, measurable gap in raw military power between the two countries — a gap that has shaped the war’s grinding character without ever producing the quick outcome many expected in 2022.

The Roots: Crimea and Donbas, 2014

The current war did not begin in 2022. In February and March 2014, following the ouster of Ukrainian President Viktor Yanukovych, Russian forces seized and annexed Crimea, a move condemned internationally as a violation of Ukrainian sovereignty. Within weeks, Russian-backed separatists declared self-proclaimed republics in Ukraine’s eastern Donbas region, and a lower-intensity war between Ukrainian forces and Russian-backed separatists continued there for the next eight years, killing an estimated 14,000 people before the 2022 invasion even began.

The 2015 Minsk Agreements and Their Collapse

Two ceasefire and political settlement agreements, Minsk I and Minsk II, were signed in 2014 and 2015 respectively, aiming to end the Donbas fighting through a political process granting the separatist regions special status within Ukraine. Both agreements were repeatedly violated, and implementation stalled for years over disputes about sequencing — Russia wanted political autonomy granted before Ukraine regained control of its border, while Ukraine wanted the reverse. This unresolved dispute remained a background tension right up to February 2022.

February 24, 2022: The Full-Scale Invasion

On February 24, 2022, Russian President Vladimir Putin ordered a full-scale invasion of Ukraine, with forces attacking from the north (toward Kyiv), east (Donbas), and south (from Crimea), while framing the action as a “special military operation.” The initial Russian plan appeared to aim at rapidly capturing Kyiv and replacing Ukraine’s government. That plan failed.

2022: The Battle of Kyiv and Ukraine’s First Counteroffensives

Ukrainian forces halted the advance on Kyiv within weeks, and Russian troops withdrew from the northern front by early April 2022, redirecting focus to the east and south. Over the following months, Russia made gains in Donbas and along the southern coast, but Ukraine mounted two significant counteroffensives in the second half of 2022 — retaking Kharkiv Oblast in a rapid September advance and liberating the city of Kherson in November, one of the war’s most significant Ukrainian victories.

2023: The Stalled Counteroffensive

Ukraine launched a much-anticipated summer counteroffensive in June 2023, aiming to break through heavily fortified Russian defensive lines in the south, particularly around Zaporizhzhia. Despite months of fighting and significant casualties on both sides, the offensive achieved only limited territorial gains against Russia’s deep, layered defensive works — trenches, minefields, and “dragon’s teeth” anti-tank obstacles built over the preceding winter. This outcome shifted Western and Ukrainian expectations considerably, from anticipating a decisive breakthrough toward preparing for a genuinely longer war of attrition.

2024-2025: Grinding Attrition and the Rise of Drone Warfare

Through 2024 and into 2025, the front line moved slowly in Russia’s favor overall, with Russian forces capturing Avdiivka in February 2024 after a costly months-long siege and continuing to grind forward in eastern Donbas through cities like Vuhledar, Pokrovsk approaches, and later Huliaipole, captured by January 2026 after a campaign beginning in September 2025. This period was defined less by large armored breakthroughs than by attritional infantry assaults, artillery duels, and a rapidly escalating drone war — both sides deploying first-person-view attack drones, long-range strike drones, and electronic warfare at a scale unseen in any prior conflict.

Ukraine’s Kursk Incursion

In a significant departure from the war’s otherwise defensive character for Ukraine, Ukrainian forces launched a surprise cross-border incursion into Russia’s Kursk region in August 2024, briefly holding Russian territory — a move intended partly to divert Russian forces from the Donbas front and partly to create leverage for eventual negotiations. Ukraine’s control of Russian territory in Kursk and neighboring Belgorod has persisted at a reduced scale into 2026, per continuing tracking by Russia Matters’ war report card.

The Front Line in Late 2026: A War of Square Miles

As of the most recent weekly tracking in September 2026, the front line has become genuinely static compared to 2022’s dramatic movements. Weekly territorial changes are now measured in single-digit to double-digit square miles rather than the hundreds of square miles that changed hands in 2022’s opening months — in one representative week in September 2026, Russia made a net gain of just one square mile after losing eight square miles the week before. Over the full year from September 2025 to September 2026, Russia’s total net territorial gain amounted to roughly 624 square miles, about 0.3% of Ukraine’s total pre-war territory. Russia currently controls approximately 19-20% of internationally recognized Ukrainian territory, including Crimea and the portions of Donbas seized since 2014.

Ukraine’s Long-Range Strike Campaign

While the ground front has slowed, Ukraine has increasingly shifted resources toward long-range strikes deep inside Russia, specifically targeting oil refineries and energy infrastructure. According to tracking cited by Russia Matters, Ukrainian strikes had reduced Russian refining capacity by roughly one-fifth by mid-2026, from around 5.2 million barrels per day before the war to approximately 3.8 million — a genuinely significant economic pressure campaign, and Russian President Putin himself estimated in September 2026 that a 40-day Ukrainian strike campaign that summer had inflicted damage equivalent to roughly 1% of Russia’s GDP.

The Human Cost: Casualty Estimates

Casualty figures remain genuinely difficult to verify independently and vary meaningfully by source, but Western officials cited by reporting in September 2026 estimated approximately 1.4 million total Russian casualties, including roughly 500,000 deaths, since the full-scale invasion began — figures that, if accurate, represent losses without recent precedent for a modern state military. A separate July 2026 estimate from a former NATO Supreme Allied Commander put Russian deaths specifically at around 450,000. Ukrainian casualty figures are less frequently published by Ukrainian authorities for operational security reasons, though independent estimates also run into the hundreds of thousands.

Diplomatic Efforts and the Current Negotiating Track

Diplomacy has continued alongside the fighting throughout 2026. Ukrainian President Volodymyr Zelensky has repeatedly signaled openness to a partial “energy ceasefire” halting strikes on power and energy infrastructure specifically, and met with U.S. President Trump on the sidelines of the UN General Assembly in September 2026 to discuss a path forward. No comprehensive ceasefire or peace settlement had been reached as of this writing, and the core disputes — territorial recognition, security guarantees for Ukraine, and sanctions relief for Russia — remain genuinely unresolved.

2026 Military Power Comparison: Russia vs Ukraine

Raw military capability numbers explain part of why this war has been so difficult for Ukraine to win outright on the battlefield, even as they fail to explain why Russia hasn’t won it either. The figures below, compiled from Global Firepower’s 2026 index as reported by Statista and MilitaryCompare, represent standing inventory and personnel — not battlefield-ready or combat-experienced numbers, which differ meaningfully after years of losses on both sides.

Category	Russia (2026)	Ukraine (2026)	Ratio
Active Military Personnel	~1,320,000	~900,000	Russia ~1.5x
Reserve Personnel	2,000,000	900,000-4,000,000 (est. varies)	Comparable to Russia favored
Total Military Aircraft	4,237	347	Russia ~12x
Fighter Aircraft	861	88	Russia ~10x
Attack Helicopters	556	n/a (140 total helicopters)	Russia dominant
Main Battle Tanks	5,630	1,121	Russia ~5x
Armored Fighting Vehicles	126,512	45,458	Russia ~2.8x
Artillery Units	11,254	1,595	Russia ~7x
Naval Fleet (total vessels)	747	169	Russia ~4.4x
Submarines	60-66	0	Russia only
Nuclear Weapons	Largest global inventory	None	Russia only
Annual Defense Budget	~$152 billion	~$84 billion	Russia ~1.8x

 

Why Russia’s Numerical Advantage Hasn’t Produced a Decisive Victory

• Ukraine has received sustained Western military aid — artillery, air defense systems, and increasingly long-range strike capability — partially offsetting Russia’s raw numbers
• Russia’s forces have suffered genuinely enormous personnel and equipment losses relative to their starting inventory, degrading actual combat-ready strength well below headline figures
• Drone warfare has partially neutralized traditional armor and air power advantages, since inexpensive first-person-view drones can destroy tanks worth millions of dollars
• Ukraine’s defensive fortifications and territorial familiarity have favored the defender in a war that has become predominantly attritional rather than maneuver-based
• Sanctions and export controls have genuinely degraded Russia’s ability to rapidly replace lost high-end equipment, particularly precision munitions and advanced armor

What Global Firepower’s Numbers Genuinely Don’t Capture

Standing inventory counts don’t reflect maintenance status, crew training and morale, ammunition stockpiles, or how much equipment has already been destroyed and not yet replaced. Both militaries have sustained massive material losses since February 2022 that these standing 2026 figures — representing current, if degraded, inventory — only partially reflect. This is precisely why raw numerical comparisons, while useful for understanding baseline scale, have proven a genuinely poor predictor of this specific war’s actual battlefield outcomes.

The Drone War: A Genuinely New Dimension of Modern Combat

Perhaps no aspect of this war has attracted more military analysis than its drone dimension. Both sides now launch attack and reconnaissance drones by the hundreds nightly — Russia alone launched 172 drones against Ukraine in a single overnight period reported in September 2026 — while Russia has begun constructing underground, strike-hardened facilities specifically to protect its drone manufacturing from Ukrainian counter-strikes. This scale of drone warfare, largely unprecedented before 2022, has genuinely changed how militaries worldwide are rethinking cheap, mass-produced strike capability.

Economic Impact Beyond the Battlefield

The war’s economic effects extend far beyond Russia and Ukraine. Global energy markets, grain exports (Ukraine is a major global wheat and corn exporter), and defense spending across NATO countries have all been genuinely reshaped by the conflict’s duration. For businesses tracking exposure to energy price volatility, this connects directly to the same planning discipline covered in our guide to business continuity versus disaster recovery planning, where distinguishing a temporary shock from a genuinely prolonged structural disruption changes what contingency planning actually looks like.

Why This War Matters to Businesses With No Direct Regional Exposure

• European energy prices remain sensitive to any escalation affecting Russian gas transit or infrastructure
• Global grain and fertilizer prices have shown continued sensitivity to Ukrainian port and agricultural disruption
• Defense sector demand has risen sharply across NATO members, affecting related supply chains and specialized manufacturing capacity
• Sanctions compliance has become a genuinely more complex, higher-stakes area for any business with Russia-adjacent supply chain exposure
• Cyber activity linked to the conflict has periodically spilled into broader targeting beyond the immediate combatants, a risk worth reviewing alongside our cybersecurity coverage

A Simplified War Timeline

Date	Event
Feb-Mar 2014	Russia annexes Crimea; Donbas separatist war begins
2014-2015	Minsk I and II agreements signed, later collapse
Feb 24, 2022	Full-scale Russian invasion begins
Apr 2022	Russian forces withdraw from northern front/Kyiv approaches
Sept-Nov 2022	Ukraine retakes Kharkiv Oblast and Kherson city
Jun-Sept 2023	Ukraine’s summer counteroffensive stalls against fortified lines
Feb 2024	Russia captures Avdiivka after prolonged siege
Aug 2024	Ukraine launches cross-border Kursk incursion
Sept 2025-Jan 2026	Russia captures Huliaipole after months-long campaign
Sept 2026	Front largely static; Zelensky-Trump UNGA meeting; no ceasefire yet

 

Could This War End Soon?

Genuinely uncertain. Both sides have shown periodic openness to partial measures like an energy-infrastructure ceasefire, and high-level diplomatic contact has continued even without a comprehensive settlement. But the core disputes — Russia’s territorial claims, Ukraine’s security guarantees, and the sequencing of any sanctions relief — remain as unresolved in September 2026 as they were at earlier points in the war. Given the attritional character the conflict settled into by 2023-2024, most military analysts genuinely expect gradual, incremental change rather than a sudden resolution absent a major shift in either side’s political calculus.

NATO’s Role Without Direct Combat Involvement

NATO as an alliance has not deployed combat troops to Ukraine, a deliberate policy aimed at avoiding direct NATO-Russia confrontation. Individual member states have instead supplied Ukraine with weapons, training, and intelligence on a bilateral basis — a distinction that has mattered enormously for how the war has been fought, since Ukraine has had to rely on donated and purchased Western equipment arriving in waves, rather than the kind of seamless, integrated logistics a full NATO combat deployment would provide.

The Weapons Systems Debate: F-16s, ATACMS, and Long-Range Strike Authorization

Much of the war’s diplomatic friction between Ukraine and its Western backers has centered on which weapons systems to supply and under what restrictions. Ukraine received its first F-16 fighter jets in 2024 after years of advocacy, and long-range ATACMS missile systems arrived with initial restrictions on striking targets inside Russia itself — restrictions gradually eased over 2024 and 2025 as the war continued. Each expansion of what Ukraine was permitted to target with Western-supplied weapons has typically followed months of internal Western debate over escalation risk, illustrating how allied political caution has shaped the war’s pace as much as battlefield conditions have.

Sanctions and Russia’s Economic Adaptation

Western sanctions imposed since 2022 targeted Russia’s financial system, energy exports, and access to advanced technology and components needed for precision weapons manufacturing. Russia has adapted considerably through alternative trade routes, particularly increased energy exports to China and India, and through domestic production substitution — though Ukrainian strikes on refining capacity in 2026 suggest genuine, continuing vulnerability in this adapted system rather than complete sanctions-proofing.

Why Standing Military Inventory Numbers Deserve a Skeptical Read

It’s worth being direct about a genuine limitation in the military comparison table above: figures like Russia’s “5,630 tanks” represent a mix of active, reserve, and sometimes aging or storage-condition vehicles rather than exclusively front-line-ready armor. Independent open-source analysts have documented tens of thousands of destroyed or captured vehicles on both sides since 2022, meaning today’s headline inventory figures already reflect substantial wartime losses and, in Russia’s case, some genuinely significant reliance on Soviet-era stockpiled equipment being refurbished and returned to service rather than new production alone.

How This War Has Changed Military Doctrine Globally

Militaries worldwide have taken direct lessons from this conflict, particularly around drone proliferation, the vulnerability of expensive armor to cheap precision munitions, and the importance of electronic warfare and counter-drone capability. Several NATO members have accelerated their own drone procurement and doctrine development specifically citing observed patterns from this war, treating it as a genuine preview of what a larger future conventional conflict between modern militaries might actually look like.

Frequently Asked Questions

When did the Russia-Ukraine war actually start?

Depending on definition: the broader conflict began with Russia’s annexation of Crimea and the Donbas war in 2014; the full-scale invasion began February 24, 2022.

How much of Ukraine does Russia currently control?

Approximately 19-20% of Ukraine’s internationally recognized territory as of September 2026, including Crimea and portions of Donbas and other eastern/southern regions.

Is Russia’s military genuinely stronger than Ukraine’s?

In raw numbers — personnel, aircraft, tanks, artillery, navy — yes, often by wide margins. But this numerical advantage has not translated into a decisive military victory, due to Western support for Ukraine, drone warfare, and genuinely enormous Russian equipment and personnel losses since 2022.

Does Ukraine have nuclear weapons?

No. Ukraine gave up the Soviet-era nuclear arsenal on its territory in the 1990s under the Budapest Memorandum in exchange for security assurances from Russia, the US, and the UK.

How many casualties has the war caused?

Estimates vary and are difficult to verify independently, but Western officials cited in September 2026 reporting estimated roughly 1.4 million total Russian casualties, including about 500,000 deaths; Ukrainian losses, while less frequently published, are also estimated in the hundreds of thousands.

The Bottom Line

Russia holds an enormous numerical military advantage over Ukraine on paper — more personnel, tanks, aircraft, artillery, and a navy several times larger, plus nuclear weapons Ukraine doesn’t possess. Yet more than three and a half years into the full-scale war, that advantage has produced a slow, attritional conflict rather than the swift victory many expected in February 2022, reshaped along the way by Western support, drone warfare, and staggering losses on both sides. Given how quickly frontline and diplomatic details continue shifting, treat this article as a snapshot and check a live tracker such as ISW’s daily campaign assessments for the latest developments.