Circumstantial evidence can be extremely powerful. There's no conflict between saying that the evidence is both extremely strong and also circumstantial. There'

Circumstantial evidence can be extremely powerful. There's no conflict between saying that the evidence is both extremely strong and also circumstantial. There's video of two Russians walking around Salisbury; there's an interview with them on Russian state TV where they totally fail to give a coherent explanation of their movements as revealed by CCTV on the day of the poisoning. And they traveled to the UK under fake IDs. I don't know what other conclusion to draw.