Russia ex-PM has mystery illness
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Former Russian PM Yegor Gaidar is being treated in a Moscow hospital after falling violently ill in Ireland.
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British doctors treating an exiled Russian former spy said on Tuesday they may never know what was used to poison him.
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Russian reformist Yegor Gaidar has been  released from hospital after treatment for an illness caused by  an unknown toxic substance, his spokesman said on Tuesday.
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The apparent front-runner was out of action for weeks with a mysterious illness. His close rival was hospitalized after an attack and was then warned he could be assassinated. With Ukraine's presidential election three weeks away, democracy seems to have gone badly awry as chaos and suspicion overshadow campaign issues in this strategically important country that sways between the West and Russia.
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A Russian former spy died late Thursday night in a London hospital three weeks after his suspected poisoning, with doctors unable to determine the cause of his illness, hospital officials and police said.
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Dioxin poisoning caused the mysterious illness of Ukrainian presidential candidate Viktor Yushchenko, a doctor said Saturday, adding that the poison could have been put in his soup.
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Ukraine's presidential candidate Viktor Yushchenko is having tests in Austria into his mystery illness.
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Medical experts are still investigating  the cause of Ukrainian opposition leader Viktor Yushchenko's  illness during election campaigning, and poisoning remains one  possibility, his doctor said on Wednesday.
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The apparent front-runner was out of action for weeks with a mysterious illness.
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Andrei Lugovoy, a contact of poisoned Russian ex-spy Alexander Litvinenko, is suffering from radiation poisoning, Interfax news agency said on Friday, quoting medical sources.
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Ukraine opposition leader Viktor Yushchenko's mystery illness was caused by poisoning, doctors say.
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A Russian former spy died Thursday night in a London hospital three weeks after his suspected poisoning, with doctors unable to determine the cause of his illness, hospital officials and police said Thursday.
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The hospital treating a former Russian spy said Tuesday radioactive substances might have been used in the poisoning of Col.Comment
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Mystery over the poisoning of a former Russian spy and fierce Kremlin critic has deepened after contradictory reports about what exactly has left him fighting for his life in a London hospital.
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Russian ex-spy Alexander Litvinenko, poisoned in London three weeks ago, has suffered a sudden turn for the worse and is now very seriously ill, the hospital treating him said on Thursday.
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Poisoning remains one of the  possibilities behind Ukrainian opposition leader Viktor  Yushchenko's illness during election campaigning, Medical  experts investigating his ailments said on Wednesday.
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An Austrian hospital says it has determined the cause of a mysterious illness afflicting Ukrainian opposition presidential hopeful Viktor Yushchenko and plans to announce the details at a news conference on Saturday.