Earlier quoted context omitted.
We are a lot less different from you than you think.
Sure. But Russians are notorious for various things - being blunt and serious; depressive, black humor; risk-takers. Not everybody, but the stereotype can inform the discussion, which was Why would anybody do this?
Instead we could use facts that are already known about e.g. Putin -- that he's an individual for whom sowing fear is more important than not being blamed, as the other similar poisonings have shown.