I will update with the full list
US – 60
Germany – 4
Poland – 4
France – 4
Latvia – 1
Lithuania – 3
Ukraine – 13
Czech Republic – 3
Estonia – 1
Netherlands – 2
Denmark – 2
Italy – 2
Romania – 1
Finland – 1
Canada 4
USA EXPELS 60 RUSSIANS
RUSSIAN AMBASSADOR TO THE USA SAYS RELATIONS WITH THE USA HAVE NOW BEEN DESTROYED
USA CLOSES RUSSIAN CONSULATE IN SEATTLE – QUOTING ESPIONAGE RISK TO BOEING AND NAVAL SUBMARINE OPS
UKRAINE EXPELS 13 RUSSIANS
NETHERLANDS SAYS IT IS EXPELLING 2 FROM THE RUSSIAN EMBASSY – WITH MORE TO FOLLOW
AFP: Reports that Germany will expel four Russian diplomats over spy nerve agent attack in Salisbury
— Sky News Breaking (@SkyNewsBreak) March 26, 2018
Trump orders expulsion of dozens of Russian diplomats
Germany just expelled Russian diplomats!
Germany expels four Russian diplomats over Skripal poisoning – reports
German newspapers have reported that Berlin is set to dismiss four Moscow diplomats over the alleged poisoning of a former Russian spy. Sergei Skripal and his daughter remain critically ill in a British hospital.
www.dw.com/en/germany-other-countries-expel-russian-diplomats-over-skripal-poisoning/a-43138074
h/t Janey