What if it doesn't? Would I be able to get my money back?
Just as I've said, mentioning Sergei Pugachev and not mentioning Boris Berezovsky in one article looks strange. I totally get it why Pugachev is being mentioned: he's been advertising himself ever since leaving Russia.
OTOH Berezovsky's dead so books about his influence might not sell well.
Fun fact: it's Pugachev's own claim he was the architect of the coup https://www.bbc.com/russian/uk/2015/07/150724_brit_press