Russia’s Chemical Warfare in Ukraine and Beyond: A Growing Threat to Global Security
The war in Ukraine has already been defined by its brutality, destruction, and disregard for international law. Yet among the many horrors of Russia’s invasion, one of the most disturbing accusations is gaining weight: the systematic use of chemical agents against Ukrainian soldiers. Though largely overshadowed by artillery barrages and drone warfare, these chemical attacks represent a dangerous escalation — one that not only threatens Ukraine but also undermines international treaties designed to protect humanity from the darkest tools of war.
Rising Cases of Chemical Attacks in Ukraine
Since Russia’s full-scale invasion in February 2022, Ukrainian officials report that more than 2,000 soldiers have been hospitalized due to chemical poisoning, with at least three confirmed deaths. Military records suggest that Russian forces have deployed chemical substances in nearly 4,800 incidents across the battlefield.
These figures are not abstract statistics. Each case reflects soldiers struggling with choking fits, blindness, skin burns, or permanent respiratory damage. Reports detail a disturbing pattern: month after month, Russia continues to use irritant and choking agents, with hundreds of new incidents recorded as recently as late 2024.
The Ukrainian Armed Forces describe this not as isolated violations but as a coordinated campaign, aimed at weakening defensive positions, flushing soldiers out of trenches, and instilling fear.
Chemical Agents in Use
The arsenal alleged to be used by Russia is varied — ranging from riot control chemicals to substances explicitly banned by the Chemical Weapons Convention (CWC).
- CS Gas (Tear Gas, via K-51 Grenades): Typically classified as a riot control agent, CS gas causes burning sensations, coughing, and vision impairment. While sometimes tolerated in domestic law enforcement contexts, its use on the battlefield is a clear violation of the CWC. Russian forces are reported to have dropped K-51 grenades packed with CS gas from drones onto Ukrainian positions.
- CN (Chloroacetophenone, via RG-VO Grenades): Once widely used in police forces but abandoned in many countries due to toxicity, CN is highly irritating to the eyes and respiratory tract. Ukrainian soldiers report exposure to industrially manufactured CN grenades recovered from Russian-controlled areas.
- Chloropicrin (PS Gas): Among the most dangerous agents cited, chloropicrin is a toxic choking agent first deployed in World War I. Exposure causes vomiting, pulmonary edema, and, in severe cases, death. According to the U.S. State Department, Russian forces have actively used chloropicrin to force Ukrainian defenders out of fortified positions, reviving the haunting specter of WWI-style chemical warfare.
A Pattern Beyond Ukraine
This is not the first time Russia has faced accusations of chemical weapon use. Over the past two decades, chemical agents have surfaced in highly political contexts:
- Novichok nerve agents were used in the attempted assassinations of former Russian spy Sergei Skripal in the UK (2018) and opposition leader Alexei Navalny (2020).
- Polonium-210 poisoning killed former FSB agent Alexander Litvinenko in London (2006).
- Earlier still, dioxins were allegedly deployed against Ukrainian presidential candidate Viktor Yushchenko in 2004.
These incidents underscore that Russia’s chemical programs never truly ended. Although Moscow declared in 2007 that it had destroyed its stockpiles under the CWC, evidence suggests the retention of undeclared substances and the development of new ones like Novichok.
The war in Ukraine, therefore, represents not an aberration but the continuation of a broader pattern of chemical weapon deployment — one that shifts from targeted assassinations to large-scale battlefield use.
Legal and Normative Violations
The use of chemical weapons is prohibited under the Chemical Weapons Convention (CWC), ratified by both Russia and Ukraine. The CWC strictly bans:
- The development, stockpiling, or transfer of chemical agents for warfare.
- The use of riot control agents as a “method of warfare.”
- The retention of undeclared chemical stockpiles.
By deploying CS, CN, and especially chloropicrin in combat, Russia is in direct violation of international law. These acts, if confirmed, constitute war crimes under the Geneva Conventions and CWC statutes.
Western governments have already responded. The UK sanctioned Russian officials, including General Igor Kirillov, head of Russia’s Nuclear, Biological, and Chemical Protection Troops, for overseeing the alleged use of riot control agents and toxic choking substances in Ukraine. Washington, too, has cited these violations in its diplomatic warnings.
Yet beyond sanctions, enforcing accountability remains an uphill battle. Russia holds veto power at the UN Security Council, limiting the ability of global institutions to respond effectively.
Why Chemical Weapons Are So Dangerous
Unlike conventional weapons, chemical agents blur the line between combatants and civilians. Wind can carry toxic clouds into civilian areas; contaminated soil and water can poison communities long after the fighting ends. The terror induced by chemical exposure also far outweighs their direct lethality, often breaking morale and causing psychological trauma.
The use of irritants like CS or CN on the battlefield may not always kill outright, but it erodes the global taboo against chemical warfare. Once normalized, these precedents may encourage other states or non-state actors to disregard international conventions, leading to wider proliferation.
The Global Implications
Russia’s alleged actions in Ukraine carry consequences beyond Europe’s battlefields:
- Erosion of International Norms: If a major power openly defies the Chemical Weapons Convention without significant repercussions, it weakens the entire framework of international disarmament.
- Security Risks for Other Regions: The spread of chemical know-how and the precedent of their use could embolden regimes or militant groups elsewhere.
- Diplomatic Fallout: Already isolated, Russia risks further sanctions and global condemnation, but the question remains whether symbolic measures can deter future violations.
The war in Ukraine is testing not only the resilience of a nation but also the strength of international law. Russia’s alleged use of chemical weapons — from tear gas grenades to choking agents like chloropicrin — threatens to unravel decades of global efforts to outlaw these weapons of mass terror.
History shows that once chemical warfare enters the battlefield, it rarely remains confined. Ukraine today may be the frontline, but the integrity of the entire rules-based international order is at stake. Whether the world acts decisively to hold Moscow accountable will determine not only Ukraine’s future but also the credibility of the global system built to prevent chemical atrocities.
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