Bullish assessments by US officials are driving President Donald Trump’s latest effort to end the war in Ukraine toward a familiar and inevitable acid test.

Talks between US and Ukrainian negotiators over a proposed peace deal with Russia ended in Miami this weekend, with few new developments and lingering questions over security guarantees and territoria...

British, French and German leaders met in London with President Volodymyr Zelenskyy in a show of European support for Kyiv at what they called a “critical moment” in the U.S.-led effort to end Russia’...

“Ukraine is determined to keep working in good faith with the American side to genuinely achieve peace,” Zelenskyy wrote on social media.