Maybe they don’t know whether it escaped or not. Maybe they just think there is a chance that the evidence will implicate them and they figure it’s not worth the risk as there’ll only be consequences if there is definitely proof that it escaped from one of their labs and not mere speculation.
Or maybe they want to argue that it didn’t come from China? I think they’ve already been pushing this angle.
Maybe they don’t know whether it escaped or not. Maybe they just think there is a chance that the evidence will implicate them and they figure it’s not worth the risk as there’ll only be consequences if there is definitely proof that it escaped from one of their labs and not mere speculation.
Or maybe they want to argue that it didn’t come from China? I think they’ve already been pushing this angle.