Ukraine alleges Russia increasingly using tear gas illegally in battle

The river in the small city of Penza suddenly turned green, residents said. The Ukrainian infantryman, call sign "Ray", said he quickly pulled on his gas mask after a Russian drone flying above his trench on the eastern front dropped a tear gas grenade. "It's like pepper spray, it makes your eyes tear up. It's not lethal, but it disturbs and knocks you out. It makes it very difficult to carry out your duties once you've inhaled it," he told Reuters of the attack he said he experienced in January.