Ukrainian President Petro Poroshenko (second right) at th 12th annual Yalta European Strategy meeting in Kiev.

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Ambassador Extraordinary and Plenipotentiary of Germany to Ukraine Christoph Weil (left) and Ukrainian Deputy Prime Minister and Minister of Regional Development, Construction and Utilities Gennady Zubko at the annual Yalta European Strategy meeting.

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Former Ukrainian President Leonid Kuchma, former European Commission President José Manuel Barroso, Ukrainian President Petro Poroshenko and Ukrainian businessman Viktor Pinchyuk pose for a common photo at the 12th annual Yalta European Strategy meeting in Kiev.

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Former president of the European Commission Jose Manuel Barroso, center, former president of the Republic of Latvia Vaira Vike-Freiberga at the 12th Yalta European Strategy Annual Meeting in Kiev.

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Kiev Mayor Vitali Klitschko at the 12th Yalta European Strategy Annual Meeting in Kiev.

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Ukraine's President Petro Poroshenko, left, speaks at the 12th Yalta European Strategy Annual Meeting in Kiev.

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Ukraine's President Petro Poroshenko speaks at the 12th Yalta European Strategy Annual Meeting in Kiev.

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From left: Ukrainian businessman Viktor Pinchuk and Ukraine's President Petro Poroshenko at the 12th Yalta European Strategy Annual Meeting in Kiev.

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From left: Ukrainian businessman Viktor Pinchuk and Ukraine's President Petro Poroshenko at the 12th Yalta European Strategy Annual Meeting in Kiev.

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