It looks like the Russians had bio / chem weapons labs in Ukraine before their collapse.
Ukraine became it's own country. The Russian labs were still there.
- A deleted web article recovered by The National Pulse reveals that former President Barack Obama spearheaded an agreement leading to the construction of biolabs handling “especially dangerous pathogens” in Ukraine.
- The article, which also highlighted the work of former Senator Dick Lugar, was additionally included in Issue No. 818 of the United States Air Force (USAF) Counterproliferation Center’s Outreach Journal.
A deleted article reveals that former President Barack Obama spearheaded an agreement that led to the construction of biolabs handling "especially dangerous pathogens" in Ukraine.
thenationalpulse.com
So the US has a policy to reduce the proliferation of such materials, and engages with Ukraine to do so. Maybe. The deleted web page casts some doubt on this theory.
It could also be that those labs were renovated and repurposed to continue to do that type of research on behalf of the US, because it legally can't be conducted here.
Also interesting that it seems to be a similar fact pattern to the partially substantiated theory that COVID escaped from a Chinese bio-weapons lab, an odd coincidence that. Far too similar for my liking, pending more facts in both cases.
The bottom line is that we don't have enough information to come to a fact based conclusion, at this point.