ANDREW E. KRAMER

Fighting superior Russian firepower, Ukrainian forces turn off-the-shelf drones into deadly weapons by adapting them to carry explosives.

An estimated 20 percent of Russia prisoner recruits are H.I.V. positive. To some, the front lines seemed less risky than prisons where they said they...

As Moscow’s troops set booby traps in forests, houses and backyards, finding them has become a dangerous art for Ukrainian soldiers.

Even as Russian forces made some gains in the battered eastern city last week, Ukraine’s forces say they have thwarted Moscow’s efforts to sever supply...

Using aerial drones to spot the enemy and direct artillery fire has become a staple of war for Ukraine and Russia, especially in the savage...

Ukraine, with far more pressing needs, plans to rebuild the colossal Mriya cargo plane, a symbol of pride that was destroyed last year in a...

Of 81 missiles fired, six were hypersonic weapons, among Russia’s newest and most advanced, which are all but impossible to shoot down. The attacks killed...

Gradual Russian advances and high Ukrainian casualties have fueled talk of a retreat from the eastern city, but Ukrainians say Russian losses are worse, a...

Ukraine’s military said that Russia was continuing its efforts to encircle the city but that it had beaten back several attacks.

A three-week fight in the town of Vuhledar in southern Ukraine produced what Ukrainian officials say was the biggest tank battle of the war so...