One thing at least we know about Vladimir Putin’s invasion of Ukraine: it isn’t going according to plan. Ah, yes, you reply, but which plan? Was it plan A, which simply said that you assemble enough conscripts and heavy artillery, roll into Ukraine, shell a few apartment blocks, amble across to Kyiv and have a victory parade? What we call the George W Bush model (except that he had his Iraq victory parade on the flight deck of an American aircraft carrier).
Russian general Valery Gerasimov devised an ultra-sophisticated doctrine for warfare in the online age. It appears the Ukrainian military have read it