Nick Turse, associate editor of TomDispatch.com and author of Tomorrow's Battlefield: U.S. Proxy Wars and Secret Ops in Africa, discusses the greatly increased US military presence on the African continent, and the bad behavior of military members stationed there.

Daniel McAdams, executive director of the Ron Paul Institute for Peace and Prosperity, discusses why the US is risking military confrontation with Russia by sending troops to Ukraine in the midst of a civil war with a ceasefire in effect.

Prolific libertarian author James Bovard discusses the Waco massacre on its 22nd anniversary, and why the Danforth Report is nothing but an official coverup of the government's crimes.

Roger Charles, coauthor of Oklahoma City: What the Investigation Missed -- and Why It Still Matters, discusses Andrew Gumbel's article in The Guardian about the key questions remaining unanswered 20 years after the Oklahoma City bombing.

Ray McGovern, a former CIA analyst turned peace activist, talks at length about Russia, Iran, Israel, Syria, Ukraine, and the neocon chaos promotion in the Mideast.

Gareth Porter, an award-winning journalist and historian, debunks the "possible military dimensions" of Iran's nuclear program.

Blogger Marcy Wheeler discusses the trial of Boston bomber suspect Dzhokhar Tsarnaev and the many unanswered questions about the attack and the FBI's failure to prevent it.