[bostonsre]

The putin assassinations are a little different though. The assassinated are publicly known to have links to the regime. The methods of death have a similar signature and the rarity of that type of death makes most people draw one likely conclusion so that the message is communicated. People fall out of windows for minor infractions and to really send a message they are poisoned.

The asset in this case wasn't known publicly and the method of death makes people assume it was simply an accident. Unless they did some private announcement, no one was deterred. If it was Iran and they wanted to send a message, they would probably have to out the asset publicly and/or make it clear that it was an assassination. e.g. a bomb would send a clear signal that it was more likely to be a nation state assassination and not some accident or a random robbery/act of violence.