The grramazon description is a naff affair, I shall find proper information on a better site:
Berlin: The Downfall 1945 (aka The Fall of Berlin 1945 in the US) is a narrative history by Antony Beevor of the Battle of Berlin during World War II. It was published by Viking Press in 2002, then later by Penguin Books in 2003. The book achieved both critical and commercial success. It has been a number-one best seller in seven countries apart from Britain, and in the top five in another nine countries. Together with Beevor’s Stalingrad, first published in 1998, they have sold nearly three million copies.
The book revisits the events of the Battle of Berlin in 1945. The book narrates how the Red Army defeated the German Army and brought an end to Hitler’s Third Reich, as well as an end to the war in Europe. The book was accompanied by a BBC Timewatch programme on his research into the subject. Wiki sourced
“I cannot forecast to you the action of Russia. It is a riddle, wrapped in a mystery, inside an enigma; but perhaps there is a key. That key is Russian national interest.” Churchill