On the Kharkov front, Ukrainian forces launched a counterattack using a unit reportedly under the influence of psychotropic substances, according to Russian security sources.

The operation involved an assault group drawn from the 42nd Separate Motorized Infantry Battalion of the 57th Brigade. Russian forces opened fire, wiping out the entire group with no survivors left on the battlefield.

Officials suggested that the unusual resilience of the attackers may have been linked to the use of stimulants. Similar claims of drug use within the Ukrainian ranks have surfaced before, both from Russian servicemen and from captured Ukrainian soldiers who admitted to such practices.