Ukrainian President Viktor Yanukovych

Ukraine's President Viktor Yanukovich failed on Thursday to salvage an ambitious free-trade pact with the European Union despite a warning that Ukraine was risking its future by turning its back on the deal.

Ukraine and the 28-nation EU had aimed to sign an ambitious trade and cooperation agreement at Thursday's summit in the Lithuanian capital Vilnius, which would have marked a historic westwards shift by the former Soviet republic away from Russia's orbit.