Robert Pape, the director of the University of Chicago Project on Security and Terrorism, discusses why the answers to the Paris terrorism attack can be found in Western intervention in Syria and Iraq.

Conn Hallinan, a columnist at Foreign Policy in Focus, discusses how Saudi Arabia's "hubris, delusion, and old-fashioned ineptness can trump even bottomless wealth" as their military campaign in Yemen and low oil prices threaten to bankrupt the kingdom.

Sheldon Richman, a research fellow with the Independent Institute, discusses Donald Trump's old fashioned protectionism and why he has so much popular support for forcibly deporting 11 million people from the US.

James Bovard, author of Public Policy Hooligan, discusses his article "Local police officers should not be able to claim 'federal' immunity from prosecution."

David S. D'Amato, an attorney with an LL.M. in international law and business, discusses how the Trans-Pacific Partnership "free trade agreement" runs afoul of libertarian principles.

Muhammad Sahimi, a professor of chemical engineering at USC, discusses his article "Iran's 'Deep State' Has the Most to Lose from Opening to the West."

Blogger Marcy Wheeler discusses how the government is trying to make peaceful protesters of America's infamous "torture school" look like terrorists - and then treat them commensurately.

Ann Jones, author of They Were Soldiers, discusses the never-ending war in Afghanistan, and why only US military contractors benefit from the blood and treasure being thrown into the quagmire.

Tim Frey, president of bullion brokerage RRBI.com, discusses how he is supporting peace and liberty by donating all his profits on Armistice Day to Antiwar.com's fundraising drive.

Ray McGovern, a former CIA analyst turned peace activist, discusses how he personally appealed to his former boss George H.W. Bush during the prelude to the 2003 Iraq War, in an effort to stop the neocons from leading President George W. Bush into disaster.

Jim Powell, a senior fellow at the Cato Institute, discusses his classic book "Wilson's War: How Woodrow Wilson's Great Blunder Led to Hitler, Lenin, Stalin and World War II."