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WASHINGTON (AP) Vice President Joe Biden is drawing parallels between Russia's interference in Ukraine and the world wars of the last century.

Biden says Ukraine's struggles start with Russia's acute violation of rules that the 20th century taught us must be upheld. He says Russia has violated the fundamental principle that Europe's borders cannot be changed by military force.

Biden was speaking to the Atlantic Council a week after meeting with leaders of Ukraine's government in Kiev.

Biden sharply criticized corruption in Ukraine. He says Ukraine has been free for 25 years but hasn't met its goals, largely because of corruption and obsolete institutions.

Biden says East and West share the view that Ukraine's government has to deliver and that corruption there is a corrosive reality.