Doctors yet to announce official diagnosis after Kara-Murza admitted to hospital in Moscow on Tuesday eveningRussian opposition activist Vladimir Kara-Murza has been taken to hospital in Moscow after a mysterious sudden illness.A regional coordinator for the Open Russia movement founded by Mikhail Khodorkovsky – the oligarch and Putin critic who now lives in Zurich – Kara-Murza, 33, was admitted to a Moscow hospital on Tuesday after a sharp drop in blood pressure and loss of consciousness.