As a general rule, novels overrule sourcebooks for "what actually happened". Sourcebooks are considered in-universe documents, and thus are prone to in-universe mistakes, obfuscations or outright lies. McEvedy actually had two shouting matches with Nicky K in the Council chambers, bits and pieces of which were combined with some deepfaking to produce the transcript seen in Warriors of Kerensky. They did in fact orbital bombard Strana Mechty, though only after the Widowmakes had framed them for setting off a nuclear weapon. In total they put one naval PPC shot each into the Council chambers, along with the halls of clans Smoke Jaguar, Jade Falcon, Snow Raven and Ghost Bear, plus two for the Widowmakers because fuck them in particular.