Ukraine's military denies the encirclement of its forces in Kursk, after Trump asks Putin to spare the lives of thousands "surrounded" by Russia's military.

The last time Ukraine signed a peace accord with Russia, 10 years ago, it brought only sporadic violence, mounting distrust, and eventually full-scale war. Here’s what we can learn from that history.

President Donald Trump said he was “being a little bit sarcastic” when he said he could end the Russia-Ukraine war within 24 hours, or before he even took office, on the campaign trail.