Ukrainian and US negotiators gave an upbeat assessment of talks in Berlin on ending Russia’s war, with a top aide to President Volodymyr Zelenskiy voicing optimism that the sides could close in on an agreement by the end of the day.

The latest round of talks between Ukrainian President Volodymyr Zelenskyy and U.S. envoys have ended as they and European allies seek an end to Russia's nearly four-year war.

The United States, Ukraine and major European countries have reached consensus on 90 percent of terms for a deal to end Ukraine’s war with Russia, two senior U.S. officials said Monday, but

A 1,000-strong "dark fleet" of rogue tankers evading sanctions has become a new target for the U.S. and Ukraine, according to a senior maritime intelligence analyst.

Germany will host U.S. and Ukrainian delegations over the weekend for talks on a ceasefire in Ukraine, before a summit with European leaders and President Volodymyr Zelenskiy in Berlin on Monday, a German official said.

Ukrainian President Volodymyr Zelenskyy has expressed willingness to drop Ukraine's NATO bid in exchange for Western security guarantees.