dissidents and opponents from abroad so the former ukrainian president sorry prime minister yulia tymoshenko the russian activist who was treated there in 2800 for suspected poisoning case and back in 2010 another 2 russian dissidents who are living in berlin america will receive medical treatment at the sheraton for a suspected mercury poisoning so it does have experience in handling these kind of cases where top hospital that also does have experience as you say with exactly this kind of case but can we say definitively whether this was indeed an intentional poisoning well that's certainly what. the family has support. because his team are all saying they believe very strongly that he was poisoned his spokeswoman has said that on thursday at the airport he was completely fine he then drank a cup of tea and suddenly was taken very early on the flight and they believe that it was possibly this tea that was poisoned russian doctors at the hospital where we've used being treated to help push back against that interpretation they actually say that they've ruled out poisoning and instead they're