Theresa May has arrived at the European Summit in Brussels and given a warning to her fellow EU leaders. She said the Salisbury attack was part of a pattern of Russian agression against Europe.
But she hasn’t got unqualified support around the table as some EU leaders have called for Britain to provide more evidence of Russia’s involvement.
Our political editor Gary Gibbon is at the summit in Brussels. Gary how strong a message are the EU leaders sending to Russia tonight?