The latest U.S.-Pakistan strategic dialogue ends amid continuing signals of troubled ties. Some experts are calling for a tougher U.S. stand with Pakistan on tackling terrorism.

Leslie H. Gelb discusses Tom Donilon's appointment as the new U.S. national security adviser.

Deputy Secretary of Defense William Lynn discusses the various new strategies used by the Pentagon to identify information technology threats, combat cyber warfare, and protect U.S. infrastructure.

Deputy Secretary of Defense William Lynn discusses the various new strategies used by the Pentagon to identify information technology threats, combat cyber warfare, and protect U.S. infrastructure.

Senate Armed Services Committee Chairman Carl Levin discusses U.S. strategy in Afghanistan and a congressional perspective on the way forward.

Senate Armed Services Committee Chairman Carl Levin discusses U.S. strategy in Afghanistan and a congressional perspective on the way forward.

Nine years after 9/11, the United States needs to combat the proliferating threat of Islamist radicalism abroad and anti-Muslim sentiment at home, says CFR's Richard A. Falkenrath.

In today's Russia, officers in the country's security agencies -- especially the FSB -- wield great influence over Russia's political life, foreign policy, and economic interests.

After 9/11, U.S. counterterrorism and intelligence became increasingly reliant on private contractors, a tendency, Dana Priest and William Arkin report, that may make the federal workforce more obligated to private shareholders than to the public interest.

In post-9/11 America, private, for-profit intelligence operations have emerged as a large and cumbersome industry whose complexities may be more a threat to U.S. national security than a benefit, report Dana Priest and William Arkin.

Leslie H. Gelb comments on President Obama's new national security strategy.

John Barry and Evan Thomas of Newsweek discuss the home-grown obstacles to Obama's goal of a nuke-free world, as he faces a series of nuclear policy decisions this spring.

In this NYT op-ed, Air Force Research Institute defense analyst Adam B. Lowther discusses potential benefits to the United States should Iran build a bomb.

Carolyn M. Leddy asks, "South Korea is getting serious about its own defense, so why isn't Japan?"

Analysts Paul K. Kerr and Mary Beth Nikitin of the Congressional Research Service discuss the extent to which ongoing instability in Pakistan has called recent nuclear weapons-related reforms into question.

Congresswoman Nita Lowey (D-NY) discusses foreign aid, civilian capacity, and national security at the Council on Foreign Relations, Washington D.C.

Watch experts discuss organized crime including the circumstances under which criminal activities constitute a threat to national security.

This session was part of the CFR symposium, Organized Crime in the Western Hemisphere: An Overlooked Threat?, undertaken in collaboration with the Latin American Program and Mexico Institute of the Woodrow Wilson International Center for Scholars, and made possible by the generous support of the Hauser Foundation, Tinker Foundation, and a grant from the Robina Foundation for CFR's International Institutions and Global Governance program.

Watch experts discuss U.S.-Russia relations, including Iranian nuclear talks and regional security concerns.

Listen to experts discuss U.S.-Russia relations, including Iranian nuclear talks and regional security concerns.