Ukraine asked the global chemical weapons watchdog in The Hague on Tuesday to investigate the alleged use of banned toxic munitions by Russia against its forces.

Kyiv's demand comes after Dutch & German intelligence agencies Friday said they had evidence of widespread use of illegal weapons by Russia.

While it was already accused of using tear gas in its three-year war in Ukraine, German and Dutch intelligence agencies say Moscow has expanded its use of chemical weapons on the battlefield, including the use of potentially-lethal chemical choking agent chloropicrin.