Timeline of Agent Death

So what led up to the collective expulsion of Russian diplomats? It all began with the poisoning of an ex-Russian spy in the UK. Here's a look at what happened.

VLADIMIR PUTIN RUSSIAN PRESIDENT "Of course, I believe that any sensible person knows that it is total rubbish and nonsense for someone in Russia to allow themselves such behaviour on the eve of a presidential election and World Cup in Russia. It is unthinkable."