Ukraine war: Fact-checking Russia's biological weapons claims

Russia claims that biological weapons are being developed in laboratories in Ukraine with support from the United States.

It says evidence is now being destroyed to conceal the country's weapons programme, but the US says this is "total nonsense" and that Russia is inventing false narratives to justify its actions in Ukraine.

We've looked into some of the claims and assess whether there's any evidence to support them.

Russia has accused the US and Ukraine of working with "pathogens of dangerous infections" in 30 laboratories across the country. Pathogens are...