So what has happened to the great Ukrainian offensive, which we were led to believe would dislodge Vladimir Putin's invading armies? I suppose a surprise is still possible, but it looks as if it has stalled, just as similar big pushes did in the First World War. In fact the whole thing looks more and more like World War One, with its years of muddy, bloody stalemate, trenches, artillery bombardments-and the mass slaughter, disfigurement and maiming of thousands of young men. And in the USA, those who were once keen on this war are growing cool. America's NBC News recently...