nerve agent, Russian diplomats, diplomatic agent, mass expulsion, Canada, EU, UK, USA, tit-for-tat, tennis, diplomacy, Russia, spy-poisoning, Skripal case

cold war, russia, diplomats, expel diplomats, russian diplomats, England, spies, Europe, spy murder

60, poisoning, ex-spy, England, response , agents, putin, Russia, Russian, 60 diplomats, spies, usa, trump, staff, departures, president , administration, UK, United Kingdom, sanctions