moscow has reacted angrily it has vowed to retaliate calling prime minister to resign may's move unprecedented and a crude provocation. may announce the measures after russia nor the deadline to provide an explanation for the attack she said moscow's failure to cooperate showed what she called a disdain for the gravity of the events her conclusion when it came was unambiguous mr speaker there is no alternative conclusion other than that the russian state was culpable for the attempted murder of mr scrip owl and his daughter and for threatening the lives of other british citizens in salzburg including detective sergeant nick beatty she said the steps against moscow would include the freezing of some russian assets and this is special of high level contacts be the headline move though was what will be the largest expulsion of russian diplomats from the u.k. in more than thirty years under the vienna convention the united kingdom will now expel twenty three russian diplomats who have been identified as undeclared