BAKHMUT, Ukraine—In the battle to keep warm, Ukrainian infantryman Kyrylo Molchanov has turned to “trench candles”—empty food cans packed with cardboard—to heat his front-line dugout.  

With Russia and Ukraine fighting through the winter, keeping Ukrainian soldiers warm could become a competitive advantage for Kyiv.  

Resume Subscription

We are delighted that you’d like to resume your subscription.

You will be charged $ + tax (if applicable) for The Wall Street Journal. You may change your billing preferences at any time in the Customer Center or call Customer Service. You will be notified in advance of any changes in rate or terms. You may cancel your subscription at anytime by calling Customer Service.

Please click confirm to resume now.