International laboratories have confirmed that Russia is using chemical weapons against Ukraine.

The Organization for the Prohibition of Chemical Weapons provided such a report, reports the Ministry of Foreign Affairs.

OPCW experts analyzed the materials submitted by Ukraine, including four Russian RG-V grenades and corresponding soil and grass samples.

As a result, two independent certified laboratories confirmed that the evidence provided by Ukraine contains CS substance, which is part of riot control agents.

The Ministry of Foreign Affairs emphasized that the Ukrainian side continuously informs the international community about Russia's systematic use of dangerous chemical substances against Ukraine, particularly RG-V type tear gas grenades.

From February 2023 to February 2025, 6,129 cases of the use of munitions containing hazardous chemical substances by Russian occupiers were documented, including 2-chlorobenzalmalononitrile (CS), chloracetophenone (CN), as well as chloropicrin and mercaptans (low-smoke agents).

Such actions by the Russian Federation constitute a gross violation of paragraph 5 of Article 1 of the Convention on the Prohibition of the Development, Production, Stockpiling, and Use of Chemical Weapons and on Their Destruction.

“The latest OPCW report has confirmed the systematic nature of Russia's crimes, which deliberately undermine the foundations of the global security architecture and erode the principles of non-proliferation of weapons of mass destruction,” the ministry stated.

It is worth noting that previously, the Organization for the Prohibition of Chemical Weapons stated that the testimonies provided by Ukraine and Russia regarding the use of chemical weapons by the armies of both countries were “insufficiently substantiated.”

Ukrainian military reported that in the east, Russian troops dropped prohibited phosphorus bombs, projectiles with flechettes—tiny metal darts, and prohibited incendiary munitions with thermite mixtures (the burning temperature of such munitions is about 3000°C), among others.