"As a direct follow-up to last week's European Council decision to react to Russia within a common framework, already today, 14 member states have chose to expel Russian diplomats", he told a news conference in Varna, Bulgaria.
The White House said in a statement on Monday that the actions "make the United States safer by reducing Russia's ability to spy on Americans and to conduct covert operations that threaten America's national security".
Britain blames the Kremlin for the attack, and has been seeking support from North Atlantic Treaty Organisation allies since expelling 23 Russian diplomats itself on March 14.
"The four Russian diplomats have until midnight on April 3 to leave Poland". The pair remain in a critical but stable condition in hospital.
Last week, European Union chief Donald Tusk predicted that member states would introduce measures against Moscow over its suspected role in the poisoning.
Britain has accused Moscow of perpetrating the attack using a Soviet-developed nerve agent known as Novichok.
Germany, France and the United States have also announced they are each expelling Russian diplomats, with the US expelling 60 of them and calling the attack an "outrageous violation of the Chemical Weapons Convention and a breach of worldwide law".
But Maas said the door for dialogue with Russian Federation remains open.
Retired military intelligence officer Skripal, 66, and his daughter, Yulia, 33, were found slumped on a bench in Salisbury city centre on March 4.
"With today's action, we are removing a large number of the unacceptably numerous Russian intelligence officers who abide in the United States", the official said. The Kremlin expelled 23 United Kingdom diplomats on March 17 in a tit-for-tat response to London. "Naturally, such a hostile move on part of this group of countries won't go unanswered", the Ministry said.
A dozen of these expelled diplomats are based at Russias Permanent Mission to the UN.
The US action is also the biggest move against Russian Federation since the Cold War era and the hostilities with the then Soviet Union. Donald Tusk, the president of the European Council, said more steps are yet to come, "including additional sanctions".
Syrian Army Makes Major Gains in Eastern Ghouta
Those who choose to stay on will not face prosecution, said Wael Alwan, spokesman for the Failaq al-Rahman group there. In Idlib on Saturday, a auto bomb exploded, killing at least seven people and wounded 25 others, the Observatory said.
Trump's China tariffs could hurt Walmart, Best Buy
Li repeated a suggestion that the USA ease restrictions on exports of high-technology goods to China as a way to even the balance. She said that "The timing is bad, the measure is bad for the USA and Korea going together on the North Korean nuclear issue".
Michigan, Loyola in Final Four; bluebloods next
Florida State: The loss ended an incredible run for coach Leonard Hamilton's Seminoles, who hit their stride at the flawless time. Still, Hamilton probably isn't the first coach to get testy immediately after losing a regional final in the NCAA Tournament.
Indians abducted by IS are dead: Sushma
Speaking to ThePrint in July past year , when minister of state for external affairs Gen. (retd) V.K. Search operations led to a mound in Badoosh where locals said some bodies were buried by the ISIS .
Rain doesn't dampen Darnold's standing at USC Pro Day
Weather conditions didn't affect Darnold, who cut the ball through the driving rain and set up ideal passes to his receivers. Apparently, doing so at USC quarterback Sam Darnold's pro day was the priority for the Arizona Cardinals on Wednesday.
Missing Pennsylvania girl found in Mexico, man arrested
Once back in the United States, arrangements will be made to get Amy back to Allentown to be reunited with her mother, police say. Esterly and his wife had gotten into a scuffle as she tried to look at Facebook posts on a phone, and police were called.
Officials investigate another package explosion in Texas
The FBI, state, and local authorities are investigating both incidents. "We're going to be here for a little while", Smith said. During a press conference officials said an employee standing next to the package explosion had ringing in her ears afterwards.