Russia said Washington was behind the attack
Foreign Minister Sergey Lavrov
He said the West was completely dominated by the United States and that the European Union was largely powerless
A usual visit or a move with diplomatic meaning?
"Our country is located in a difficult geopolitical region, between many crises"
The British government has been under pressure from lawmakers and media to show it is getting tough on Russia
Russia will expel UK diplomats, Lavrov said