Moscow warned on Wednesday that it will respond soon to the recent expulsions of more than 130 Russian diplomats from Western nations. Two dozen countries including the United States and many European Union states, as well as NATO, have announced they are expelling a total of more than 150 Russian diplomats, in a show of solidarity with Britain over the nerve agent attack on a former Russian spy in England. Asked if Russia is going to react to the expulsions, Kremlin spokesman Dmitry Peskov told reporters on Wednesday that Russias response will follow and that it will be "timely and will suit the interests of Russia." Valentina Matviyenko, the speaker of the upper house of parliament, also said: "Without a doubt, Russia, as is diplomatic practice, will respond symmetrically and observe parity when it comes to the number of diplomats." The Russian Foreign Ministry said British special services could have been behind the poisoning of Sergei Skripal and his daughter in the English city of Salisbury on March 4. “An analysis of all the circumstances ... leads us to think of the possible involvement in it (the poisoning) of the British intelligence services," it said in a statement. "If convincing evidence to the contrary is not presented to the Russian side we will consider that we are dealing with an attempt on the lives of our citizens as a result of a massive political provocation," it added. But British officials have previously rejected such Russian claims as nonsense.