The head of the Upper House of Parliament in Russia has called the expulsion of diplomats a "provocation". He has promised Russia will react in a "fast, tough and reciprocal way".
Separately, Angela Merkel said that the EU is united on Russia but must keep talking to Russia. The German chancellor said: "We take the findings of the British government very seriously ... We will present a common European view here.
"Nonetheless, I say we can't break off all contacts now. We must still talk with the Russians despite all differences of opinion."
Other highlights from the retaliation include the suspension of some Russian assets, a quasi boycott for the world cup, where no UK officials will be present, a suspension of all high-level contact with Russia, as well as sanctions for human-rights violations.
MAY: U.K. TO EXPEL 23 RUSSIAN DIPLOMATS IN RESPONSE TO ATTACK
MAY: EXPELLED RUSSIAN DIPLOMATS ARE INTELLIGENCE OFFICERS
MAY: EXAMINING NEED FOR NEW COUNTER-ESPIONAGE POWERS
MAY: WILL LOOK INTO SANCTIONS FOR HUMAN-RIGHTS VIOLATIONS
MAY: WILL FREEZE RUSSIAN ASSETS WHERE POSSIBLE
MAY: WILL USE EXISTING POWERS TO MONITOR TRAVELERS TO U.K.
MAY: NOT IN OUR INTEREST TO BREAK ALL DIALOGUE WITH RUSSIA
MAY: WILL SUSPEND ALL HIGH-LEVEL CONTACT WITH RUSSIA
MAY: NO ATTENDANCE BY OFFICIALS AT WORLD CUP
MAY: NO MINISTERS, ROYAL FAMILY TO WORLD CUP
MAY: SAYS SOME MEASURES AGAINST RUSSIA IT CANNOT DISCLOSE
MAY: WON'T TOLERATE FLAGRANT BREACH OF RUSSIA'S OBLIGATIONS
MAY: WILL GET OPCW TO VERIFY U.K. ANALYSIS OF NERVE AGENTUPDATE 2:
Some more soundbites out of Russia, via Reuters:
RUSSIAN FOREIGN MINISTRY SAYS BRITISH GOVERNMENT HAS OPTED FOR FURTHER ESCALATION BY EXPELLING RUSSIAN DIPLOMATS
RUSSIAN FOREIGN MINISTRY SAYS BRITISH PM STATEMENT IS A FLAGRANT PROVOCATION
RUSSIAN FOREIGN MINISTRY SAYS BRITISH GOVERNMENT HAS CHOSEN CONFRONTATION WITH RUSSIA
We will soon find out how Russia will respond.https://archive.fo/4ozv3https://archive.fo/n1vg5