And that ladies and gentlemen is what Russia wants. For 'the West' to forget about it and move on. Much like Crimea, MH17, E Ukraine, CW use in Syria etc. etc. For all of these episodes to be 'forgotten about'.
Russia is the down market version of Pariah's are us. There are the top of the market pariahs like North Korea. It's not just a political assassination, its a Kim young'un political assassination. Marks and sparks of the murderous regimes. Then there's Central African republic with a few hundred cheap and cheerful machete killings a week with a side order of dead human heart. Russia is like pound world. Sell you absolute rubbish then deny they have ever sold it to you. When you get antsy, they start whingeing about their victimhood.
Not to worry, they will soon be out of business with such poor customer service.