'Extremely concerning,' Britain and Australia join the Pentagon in monitoring Russia's potential use of chemical weapons in Ukraine

On Monday, officials in Washington and London launched an investigation into the probable use of chemical weapons by the Russian military in the besieged Ukrainian city of Mariupol, after Ukrainian forces in the region claimed to have identified evidence of chemical poisoning among their troops.

According to the Kyiv Independent, the head of Ukraine's ultranationalist paramilitary Azov battalion said that Russian forces used a dr....