"The Rise and Fall of the Third Reich", by William Shirer. A little outdated in terms of his perceptions, and he's clearly homophobic, but he delivers a thoroughly engaging chronicle on Nazi Germany.
"The Gulag Archipelago", by Alexander Solzhenitsyn. It's strange to be nostalgic for a monarchy or, during the Nineties, the very Soviet Union he lambasted. Nevertheless, Alex is heartfelt and comprehensive, always being able to connect to both sympathetic and empathetic ideas.
"A Mosque in Munich: Nazis, the CIA, and the Rise of the Muslim Brotherhood in the West", by Ian Johnson. A captivating narrative on the origins of our poisonous relationship with Islam. Highly recommended.