LONDON: British Prime Minister Theresa May said on Wednesday she had come to the conclusion that Russia was culpable for the attempted murder of Sergei Skripal and his daughter. In a speech in the British Parliament soon after Yakovenko"s statement, Prime Minister Theresa May said Britain would expel 23 Russian diplomats, describing it as the single biggest expulsion in over 30 years. Skripal, 66, and his daughter Yulia, 33, were found slumped unconscious on a bench outside a shopping centre in the genteel southern English city of Salisbury on March 4. They have been in a critical condition in hospital ever since. "There is no alternative conclusion, other than that the Russian state was culpable for the attempted murder of Mr Skripal and his daughter, and for threatening the lives of other British citizens in Salisbury,” May said. “This represents an unlawful use of force by the Russian state against the United Kingdom," she said. “Under the Vienna Convention, the United Kingdom will now expel 23 Russian diplomats who have been identified as undeclared intelligence officers," May told parliament. “They have just one week to leave.”