MARC SANTORA

As Russian forces breach a supply line and seek to encircle opposing soldiers, Ukraine’s commanders maneuver to “more advantageous positions.”

The American-provided air-defense systems have helped Ukraine defend itself against Russian assaults, but Washington has warned that it will not be able to keep them...

As conventional forces struggle to break through defensive lines, both sides are increasingly turning to guerrilla tactics.

How a Ukrainian soldier escaped from the embattled Azovstal steel complex in Mariupol and sneaked 125 miles to Ukrainian territory.

The interruption could pose real danger in a country where many rely on phone alerts to warn them of impending Russian bombardments.

The Ukrainian leader will be appealing for more military support from the United States as an emboldened Russia steps up its attacks on his country.

The government in Kyiv remains hopeful of further American assistance, but it is also looking to other resources — and trying to make clear what...

President Volodymyr Zelensky’s briefing, via a video call, will come a day after the White House warned that aid to his country would soon run...

President Volodymyr Zelensky’s briefing, via a video call, will come a day after the White House warned that aid to his country would soon run...

Ukrainian troops have taken positions on the east bank of the Dnipro River, posing a threat to Russia’s dominance of the region. Here is a...