Ronald S. Lauder, a billionaire friend of Mr. Trump, is among the investors. The move comes as the Trump administration looks for investment opportunities in Ukraine.

© Karsten Moran for The New York Times

The Ukrainian leader is reshuffling his cabinet as a corruption scandal reshapes the political landscape at a pivotal point in peace negotiations.

© Tetiana Dzhafarova/Agence France-Presse — Getty Images

While Kyiv has reported progress in negotiations, and is accelerating talks in the coming days, major questions remain unresolved about which countries will provide what kind of security for how long.

© Tierney L. Cross/The New York Times