Dennis has always found history to be a subject of endless interest. Learn along with him as he interviews some of the world's best historians about some of history's most fascinating subjects.

1) How George Washington Forged a Nation: Dennis talks to Logan Beirne, Olin Scholar at Yale Law School. His new book is Blood of Tyrants: George Washington and the Forging of the Presidency.

2) Rediscovering Grover Cleveland : Dennis talks to John Pafford, Professor of History and Philosophy (emeritus) at Northwood University. His new book is The Forgotten Conservative: Rediscovering Grover Cleveland.

3) Great Battles that Changed the World: Dennis talks to Jim Lacey, defense analyst and teacher at the Marine Corps War College. His new book is Moment of Battle: The Twenty Clashes That Changed the World.

4) How the Soviet Union Enslaved Its Citizens: Dennis talks to Anne Applebaum, Washington Post columnist and Pulitzer Prize-winning author. Her new book is Gulag: A History.

5) The Year before the Great War: 1913: Dennis talks to Charles Emmerson, senior research fellow at the Royal Institute for International Affairs in London. His new book is 1913: In Search of the World before the Great War.

6) Europe on the Edge of War: July 1914: Dennis talks to Sean McMeekin, assistant professor at KOC University in Istanbul, Turkey. His new book is July 1914: Countdown to War.

7) How World War I Happened: Dennis talks to Christopher Clark, professor of modern European history at the University of Cambridge. His new book is The Sleepwalkers: How Europe Went to War in 1914.