为什么要对Skripal中毒这么大惊小怪呢？

On the surface, the Skripal poisoning seems like a minor issue on the scale of international politics: a couple of Russian secret service agents poison a couple of Russian citizens in their UK home. Understandably a big enough crime for the pair of assassins to go to jail, but a relatively minor issue in the grand scheme of things.On the surface, the Skripal poisoning seems lik