[JURIST] Ukrainian authorities said Thursday that they have discovered who was behind the assassination attempt by poisoning directed at President Viktor Yushchenko [Wikipedia profile; JURIST news archive] and have traced the substance used in the plot to a facility housing banned chemical weapons. Yushchenko, who won the disputed presidential election [JURIST report] in Ukraine last year which put hundreds of thousands in the streets of Kiev and threatened to split the country, said in an interview that the poison had been used by the Soviet security services to kill others in the past and added that he was proud to have overcome the poison's effects, which drastically altered his appearance during the election. Yushchenko also said that new information had come to light about those responsible for the poisoning and that he was confident that the guilty parties would be brought to justice. The London Telegraph has more.