The fight in Ukraine changes so rapidly that weapons makers can't afford to constantly overhaul and redevelop whole systems.

Ukraine’s new Defense Minister Mykhailo Fedorov announced on Wednesday that 200,000 Ukrainian soldiers are officially considered as absent without official leave (AWOL), meaning they have left their positions without permission to do so.

Fates of Kupiansk and Huliaipole highlight Kyiv’s reliance on a shrinking pool of experienced, reliable soldiers

Russia's "massive" military losses in Ukraine are unsustainable, NATO Secretary General warns, as conflict set to enter fourth year with no clear end in sight.

Ukraine's new defense minister says wide-scale desertions and draft-dodging are major challenges as Russia's invasion continues.

Up to 25,000 Russian soldiers are being killed every month, NATO Secretary General Mark Rutte said this week.

This is Chris York reporting from Kyiv on day 1,422 of Russia’s full-scale invasion of Ukraine. Today's top story so far: A large group of Russian soldiers crossing snowy ground north of Kharkiv was obliterated by drones,

Ukraine's parliament appointed young technocrat Mykhailo Fedorov as defence minister on Wednesday as the government seeks to drive innovation to strengthen the military during a ​difficult phase of the nearly four-year war.