Ukrainian Prime Minister Arseniy Yatsenyuk has called for unity of the European Union and the United States needed "to defeat the aggressor."

He made the statement at the Global Forum of the American Jewish Committee during a working visit to Washington DC, the Ukrainian government press service has reported.

""This is war not just Ukraine and Russia, this is a war between the past and the future, the dark and the light," AJC's website quoted Ukrainian Prime Minister.

"We are positive that we can regain control over Donetsk, Lugansk and Crimea. We will control our territory," he said.

Ukrainian Prime Minister Arseniy Yatsenyuk has called for unity of the European Union and the United States needed "to defeat the aggressor."

Ukraine is a vital element of the nuclear non-proliferation program and peace and stability across Europe, Yatsenyuk continued.

He also emphasized the importance of "unity of EU members and the free world."

In the opinion of Yatsenyuk, both the unity of European Union countries and the unity of the U.S. and the EU were significant. "Your unity is the best recipe and the best response to any aggressor and any aggression. This is the only possible and potent response to those who want to disrupt the world order and 'draw' new borders in the post-WWII world, who do not respect rights, freedoms, democracy and our nations," Yatsenyuk said.

"Ukraine is defending not only itself; we are defending Europe and international law and order," he said.

"We stand strong and united with Ukraine in its struggle to chart its own democratic destiny and preserve its territorial integrity,” said the Executive Director of the Committee David Harris. "AJC is proud to stand with Ukraine and Yatsenyuk in their ongoing fight to defend their independence", Harris also said.