President Obama gave these remarks at the Pentagon Memorial Service in remembrance of 9/11, on September 11, 2012.

Republican vice presidential candidate Paul Ryan gave these remarks on September 11, 2012.

Republican presidential candidate Mitt Romney gave this statement on September 11, 2012.

The war on terror may be over, but it's left behind a terrible human rights legacy--and Barack Obama has done very little about it, says James Traub, a fellow at the Center on International Cooperation.

Edward Alden and Liam Schwartz explain how a safe and simple visa process can help the U.S. tourism industry.

Edward Alden and Liam Schwartz recommend a visa screening system that will benefit U.S. security and the economy by focusing scrutiny on high-risk travelers and speeding approval for low-risk ones.

Laurie Garrett discusses the tenth anniversary of the post-9/11 anthrax attacks and argues, ""If 9/11 marked the single most powerful moment of American unity since Pearl Harbor, the anthrax mailings ushered the opposite..."

Laurie Garrett discusses the FRONTLINE documentary, "The Anthrax Letters."

Richard N. Haass says that the war in Afghanistan began ten years ago as a narrow, modest war of necessity but has evolved into a broad, ambitious war of choice.

It's tempting to see the 9/11 attacks as having fundamentally changed U.S. foreign policy. It's also wrong.

Experts examine the strategic and tactical policies of the United States in regards to homeland security, as part of a CFR symposium, 9/11: Ten Years Later.

Richard A. Falkenrath, John McLaughlin, and Juan Zarate discuss the extent to which the U.S. is still vulnerable, as part of a CFR symposium, 9/11: Ten Years Later.

Philip Zelikow discusses security paradigms and their potential futures since 9/11, as part of a CFR symposium, 9/11: Ten Years Later.

Philip Zelikow, former executive director of the 9/11 Commission Report, explores the findings of the report and presses the need to hold trials for the 9/11 conspirators.

Philip Zelikow, former executive director of the 9/11 Commission Report, presses the need to hold trials for the 9/11 conspirators and explores the findings of the report.

This session was part of a CFR symposium, 9/11: Ten Years Later, which was made possible by the generous support of Shelby Cullom and Kathryn W. Davis.

Elliott Abrams discusses the effect of 9/11 on U.S. foreign policy in the Middle East.

Ten years after 9/11, author Ahmed Rashid discusses U.S. foreign policy in Pakistan and Afghanistan, and why wars in the region cannot be won purely by military force.

Gayle Tzemach Lemmon asks, "... will women's rights be negotiated away in the quest to reach a graceful exit - or, in fact, any kind of exit, in Afghanistan?"

Post-9/11, the United States failed to take advantage of a moment of unprecedented global power to reshape itself and now faces an array of economic threats, says CFR President Richard N. Haass.

Barry Pavel and Matthew Kroenig argue that while a deterrence approach holds great potential for helping to thwart future al Qaeda attacks, it remains a poorly understood and underutilized element of U.S. counterterrorism strategy.