I can recommend Peter Hopkirk's book - he has written several other books about the history of the area as well
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Honestly at A2 I doubt he's reading any history book anytime soon. You might try to find something classic from the era like Solzhenitsyn's Gulag Archipelago in a nice Russian edition for the novelty of it, Khrushchev's memoirs, Gorbachev's Perestroika, etc. More recently, Dmitri Volkogonov has written biographies of Lenin, Trotsky, and Stalin. They are not without criticism but again would probably look nice as a series.
There was also Edvard Radzinsky in the 90s who wrote a somewhat sensationalist and falsifiable account of Stalin, but as a journalist his prose is probably easier to read than an academic historian. He also wrote a book on Nicholas II called The Last Tsar.
Finally, I'd look at this book https://www.amazon.com/Advanced-Russian-Through-History-Benjamin/dp/0300109474/ref=sr_1_2?dchild=1&keywords=russian+through+history&qid=1606067132&sr=8-2 as an option.
This book was a bit of a white whale for out of print book junkies, the cheapest one on Amazon before this release was 800 bucks. https://www.amazon.com/Always-Honour-Honor-Memoirs-General/dp/B00BA2XXHY/ref=pd_sbs_14_1/132-5202452-6474107?_encoding=UTF8&pd_rd_i=B00BA2XXHY&pd_rd_r=25e82dfc-d969-4689-a582-4468af8436ad&pd_rd_w=KOvp3&pd_rd_wg=NwDZN&pf_rd_p=ff...