Two economists, Steven Radelet of the Center for Global Development and William Easterly of New York University, debate the effectiveness of foreign aid.

Richard A. Posner and Juliette Kayyem debate whether a domestic intelligence agency, such as Britain's MI5, would benefit U.S. counterterrorism efforts.

Two leading national security specialists, Daniel Goure, a vice president of the Lexington Institute, and Joseph Cirincione, senior vice president for national security and international policy at the Center for American Progress, debate whether America and its military are headed unavoidably toward an "Iraq Syndrome."

Philip J. (P.J.) Crowley, a former top national security official in the Clinton administration and senior fellow at the Center for American Progress, debates the ability of Democrats to run national security affairs with Richard Miniter, an adjunct fellow at the Hudson Institute and author of Losing Bin Laden.

Some experts argue the United States intends to establish a long-term military foothold in Iraq to increase its influence in the region, while others say it is merely responding to present security concerns.

The Chinese economic boom could pose a real challenge to U.S. power and influence. Morgan Stanley's Stephen Roach and Desmond Lachman of the American Enterprise Institute debate whether China's growth is happening at the United States' expense.

U.S.-Cuban relations have been virtually nonexistent since 1961, when the United States assumed a two-pronged policy of economic embargo and diplomatic isolation. Now that Fidel has transferred power to his younger brother, Raul, some experts think the United States should reconsider its policy toward Cuba. Philip Peters of the Lexington Institute and Dennis Hays, the State Department's former Coordinator for Cuban Affairs, debate how the United States should engage with a post-Castro Cuba.

While at the center of global collective security efforts, the UN Security Council faces criticism seemingly from all sides for its structure and performance. Joshua Muravchik of the American Enterprise Institute and Lee Feinstein of the Council on Foreign Relation debate the Security Council's effectiveness.

Online Debate: Two experts spar over U.S. policy toward the new UN Human Rights Council.

Alex Jones, director of Harvard's Shorenstein Center on the Press, Politics, and Public Policy, and Quin Hillyer, executive editor of The American Spectator, discuss reporting on the 'war on terror,' and its impact on national security.

The debate over immigration rages on as Congress tries to reconcile very different approaches to addressing the growing number of illegal immigrants in America. Tamar Jacoby of the Manhattan Institute and Steven Camarota of the Center for Immigration Studies discuss how the United States should handle the issue.

On bloggingheads.tv, Steven Cook and Slate's Eric Umansky discuss Arab-Israeli Conflict, Egypt, and democratization in the Middle East.

Abraham D. Sofaer, a senior fellow at Stanford University's Hoover Institution, and Kenneth Roth, executive director of Human Rights Watch, discuss the merits of capital punishment in trying dictators and other war criminals in this CFR Online Debate.

Paul J. Saunders and Morton H. Halperin debate the wisdom of the U.S. policy of promoting democracy.

Henry Sokolski of the Nonproliferation Policy Education Center and Teresita Schaffer of CSIS debate the administration's approach to nuclear cooperation with India.

Karim Sadjadpour of the International Crisis Group debates Patrick Clawson of the Washington Institute on whether Washington should deal directly with Tehran to resolve the nuclear stalemate.

Two Middle East experts, Nadia Hijab and Shmuel Rosner, discuss different approaches for dealing with Hamas.