Viktor Andriyovych Yushchenko (Ukrainian: Віктор Андрійович Ющенко, IPA: [ˈwiktor ɐnˈd⁽ʲ⁾r⁽ʲ⁾ijowɪtʃ ˈjuʃtʃenko]; born 23 February 1954) is a Ukrainian politician who was the third president of Ukraine from 23 January 2005 to 25 February 2010. Following an assassination attempt in late 2004 during his election campaign, Yushchenko was confirmed to have ingested hazardous amounts of 2,3,7,8-tetrachlorodibenzodioxin (TCDD), the most potent dioxin and a contaminant in Agent Orange. He suffered disfigurement as a result of the poisoning, but has since made a full recovery.