Complex sentence: In even stronger terms, she condemned the American neo-Nazi historian David Hoggan for his book, "War Forced on Germany", as well as David Irving's revisionist "Hitler's War", which suggested Hitler was unaware of the Holocaust.
Split into simpler sentences: In even stronger terms, she condemned the American neo-Nazi historian David Hoggan for his book, "War Forced on Germany". In the same vein, she was enraged by David Irving's book, "Hitler's War", with its suggestion that Hitler was unaware of the Holocaust.