Putin would rather keep killing than admit he’s lost. As a winter of misery looms in Ukraine, Nato must step in | Simon Tisdall

<p>The Russian leader is ploughing on with his forever war – and each day is a crime against humanity. Western democracies cannot simply sit on their hands</p><p>Ukraine’s people face a winter from hell. Thwarted on the battlefield, Russia is stepping up systematic, daily attacks o