In the north a 50,000-strong Russian force is attacking Sumy, a provincial capital. Our model is detecting artillery fire and ...

While similar Russian operations inside Ukraine have been rare, the Ukrainian authorities said on Thursday that one of the S.B.U.’s officers from an elite unit was gunned down in daylight in Ukraine’s ...

Childhood shaped by war for two Ukrainian brothers Before Russia invaded Ukraine, Varvara Tupkalenko's two sons played at home with miniature cars, like many boys their age.

Artificial intelligence supercharges Ukraine's reconstruction effort in a project called Circularity on the Edge, which ...