(some of the links and info may be updated. These are old articles)
Yushchenko: Russia blocking poisoning probe
By Bonnie Malkin and agencies, September 12, 2007
Mr Yushchenko before and after the poisoning
"Mr Yushchenko, a pro-European politician who wanted to bring his country [The Ukraine] out of Russia's shadow, fell seriously ill on September 6, 2004 as he was competing in presidential elections against a pro-Moscow candidate, Viktor Yanukovich, now prime minister.
After months of tests in an Austrian clinic, it was determined that he had ingested a massive amount of the poison dioxin.
Although he survived, his face was left bloated and pockmarked, and he has had to undergo regular treatment to rid his body of the toxin.
In an interview with Le Figaro he said he believed the dioxin used to disfigure him was made in a Russian lab.
Mr Yushchenko did not directly accuse the Russian government of being behind his poisoning, but he did say he had 'practically put all the pieces together' and the attempt against him 'was not a private action'. ..."
http://www.telegraph.co.uk/news/worldnews/1562838/Yushchenko-Russia-blocking-poisoning-probe.html
_____________________________________________________
"Viktor Andriyovych Yushchenko (born February 23, 1954) is the third and current President of Ukraine". He took office on January 23, 2005. [there is a new pro-Putin president since]
http://en.wikipedia.org/wiki/Viktor_Yushchenko
_______________________________________________________
(Ukraine) Hunt starts for Yushchenko's poisoner:
http://www.telegraph.co.uk/news/worldnews/europe/ukraine/1478922/Hunt-starts-for-Yushchenko%27s-poisoner.html
_______________________________________________________
Putin's Poison?
by Peter Brookes, November 27, 2006
The death of former Russian spy, Alexander Litvinenko, last week from radioactive Polonium-210 poisoning is the latest in a series of politically motivated attacks on the outspoken opponents of Russian President Vladimir Putin.