While the Ukrainians are fighting a conventional war on their own territory, Russia and the West are engaged in an unconventional one fought by economic pressure, political subterfuge and dirty tricks. The apparent sabotage of the Nord Stream gas pipelines seems just the latest example. Both of these lines linking Russia to Germany have sprung devastating leaks. The cause, according to seismological readings, was a series of explosions off the Danish island of Bornholm, too directed (and powerful enough to breach 4cm of steel and a thick concrete mantle) and too synchronised to be any kind of an accident. There...