If you like reading here is a list from CIA veteran Hayden Peake. Peake himself reads these. 

Current Topics
Intelligence, Surveillance and Reconnaissance: Acquisitions, Policies and Defense Oversight, by Johanna A. Montgomery (ed.).

General
The Dictionary of Espionage: Spyspeak into English, by Joseph C. Goulden.

Historical
Black Ops Vietnam: The Operational History of MACVSOG, by Robert M. Gillespie.

Classical Spies: American Archaeologists with the OSS in World War II Greece, by Susan Heuck Allen.

Dealing With the Devil: Anglo-Soviet Intelligence Cooperation During the Second World War, by Dónal O'Sullivan.

Double Cross: The True Story of the D-Day Spies, by Ben Macintyre

Enemies: A History of the FBI, by Tim Weiner.

Franco's Friends: How British Intelligence Helped Bring Franco To Power In Spain, by Peter Day.

Gentleman Spymaster: How Lt. Col. Tommy 'Tar' Robertson Double-crossed the Nazis, by Geoffrey Elliott.

The Ideal Man: The Tragedy of Jim Thompson and the American Way of War, by Joshua Kurlantzick.

Joe Rochefort's War: The Odyssey of the Codebreaker Who Outwitted Yamamoto at Midway,by Elliot Carlson, with a foreword by RAdm. Donald "Mac" Showers, USN (Ret.).

Memoir
Malayan Spymaster: Memoirs of a Rubber Planter Bandit Fighter and Spy, by Boris Hembry.

Intelligence Abroad
Historical Dictionary of Chinese Intelligence, by I.C. Smith and Nigel West.

Israel's Silent Defender: An Inside Look at Sixty Years of Israeli Intelligence, by Amos Gilboa and Ephraim Lapid (eds.).

Learning from the Secret Past: Cases in British Intelligence History, by Robert Dover and Michael S. Goodman (eds.).

Main Intelligence Outfits of Pakistan, by P.C. Joshi.

The Politics of Counterterrorism in India: Strategic Intelligence and National Security in South Asia, by Prem Mahadevan.

Stalin's Man in Canada: Fred Rose and Soviet Espionage, by David Levy.

Stasi Decorations and Memorabilia: Volume II, by Ralph Pickard, with a foreword by Ambassador Hugh Montgomery.