This report by the Combating Terrorism Center attempts to disaggregate the threat posed by al-Qaeda in the Arabian Peninsula from the sources of instability surrounding it, by examining the group's strategy, tactics and objectives from a local perspective.

Brian Michael Jenkins, Senior Adviser to the President of the RAND Corporation, revisits the topic of homegrown terrorism, expands on earlier writings about domestic counterterrorist strategy, and updates the numbers and case descriptions to include all of 2010.

Richard N. Haass argues that 9/11 was a terrible tragedy by any measure, but it was not a historical turning point that heralded a new era of international relations in which terrorists with a global agenda prevailed, or in which such spectacular terrorist attacks became commonplace.

The deadliest month for U.S. troops in Afghanistan comes to an end amid renewed debate about the U.S. endgame there and whether the nearly decade-long conflict has achieved its goals.

A broad-sweeping look at international efforts to combat terrorism. This is part of the Global Governance Monitor, an interactive feature tracking multilateral approaches to several global challenges.

While we can contain terrorism, we can't afford the costs of trying to eliminate it and will have to learn how to live with the chronic threat of low-level attacks, says CFR's Stephen Biddle.

A near absence of terrorist incidents in the United States since 9/11 points to the success of the Bush administration's counterterrorism measures that once stirred controversy but now have bipartisan acceptance, writes CFR's Max Boot

The United States has made real strides against nuclear terrorism, but efforts to secure nuclear materials are incomplete and will require continued commitment, says CFR's Michael Levi.

Initial U.S. successes in Afghanistan and Pakistan after 9/11 masked deeper problems that have beset Washington's effort to stabilize the "AfPak" theater, writes CFR's Daniel Markey.

Guantanamo Bay, where hundreds of terror suspects have been detained since 9/11, has underscored the need for flexibility and careful balancing in detainee policy to confront twenty-first-century threats, writes CFR's Matthew Waxman.

Drones have become a cost-effective default tactic for dealing with potential terrorist threats since 9/11, but this policy could lead to drone strikes by other countries as well as pushback from targeted states, says CFR's Micah Zenko.

This memo assesses the repercussions of a Pakistan-based terrorist attack on the United States and recommends responses for U.S. decision-makers.

The State Department Country Reports on Terrorism 2010 was released on August 18, 2011. It found that "Al-Qa'ida...remained the preeminent terrorist threat to the United States in 2010".

This video is part of a special Council on Foreign Relations series that explores how 9/11 changed international relations and U.S. foreign policy. In this video, Stewart M. Patrick, senior fellow and director of the International Institutions and Global Governance Program at the Council on Foreign Relations, identifies the successes and lasting challenges in the international community's response to global terrorism since the attacks of September 11, 2001. "The world has made a lot of progress," says Patrick, "but it still has quite a bit of a ways to go to achieve real consensus and real solidarity in this fight."

As ethno-political violence continues in Pakistan's financial capital, Pakistani analyst Mosharraf Zaidi says the city needs a more effective police force and judicial system, which in turn will engender investor confidence globally.

Max Boot argues that the glow of the bin Laden raid may blind the United States to other terrorist threats.

A new plan from the White House aimed at the prevention of domestically based, violent extremism offers little substance, and seems more concerned with not offending the U.S. Muslim community, says CFR's Ed Husain.

This video is part of a special Council on Foreign Relations series that explores how
9/11 changed international relations and U.S. foreign policy. In this video, Ed Husain, Senior Fellow for Middle Eastern Studies at the Council on Foreign Relations, who was previously a member and strategist for radical Islamist organizations in London discusses the impact of the Sept. 11, 2001 terrorist attacks on Islamist extremism as well as global counter-terrorism efforts. "The most important thing that happened after 9/11," says Husain, "is not just the so-called 'War on Terror', but more importantly, the unspoken and often unheard developments within Islamist extremism globally." Husain argues that "the global Islamist movement then split into two, immediately after 9/11," into global jihadists like al-Qaeda on one side and non-violent extremists on the other.

Nicholas Schmidle desscribe the raid on Osama bin Laden's compound in Abbottabad, Pakistan by a team of Navy SEALs in this piece for The New Yorker.