Concerning the United States' legacy in Iraq Meghan L. O'Sullivan writes, "Had Saddam not been removed, it is almost certain that we would still be facing a volatile and potentially even more dangerous Middle East."

According to Meghan L. O'Sullivan, "Given the several still-undetermined variables and the wide variety of plausible outcomes, it is too early to bring final judgment on American efforts in Iraq even 10 years on."

Meghan L. O'Sullivan reflects on the past decade of U.S. involvement in Iraq.

Carl Levin discusses U.S. defense policy and ongoing national security concerns.

Carl Levin discusses U.S. defense policy and ongoing national security concerns.

Carl Levin discusses U.S. defense policy and ongoing national security concerns.

Secretary of Defense Charles Hagel held a press briefing on March 13, 2013, to announce increased missile defense operations to prepare for possible attack from North Korea or Iran. North Korea's Supreme Command has recently released threatening statements.

Mexico is poised to take on a few of the country's biggest monopolies and moguls by enacting new legislation. But the nation needs to do much more, writes Shannon K. O'Neil.

This guide provides expert analysis and background on some of the central issues facing Iraq ten years after the U.S.-led invasion.

Benn Steil offers a neat and innovative way for the Federal Reserve to reverse its monetary stimulus efforts as the economy recovers, without the worrisome economic and political consequences of having to sell off its massive stock of mortgage-backed securities.

Matthew Waxman discusses the Washington Post's recent editorial page U.S. cyber-strategy debate on his blog, Lawfare.

In looking abroad to promote economic growth, Robert Pastor argues the United States need not go further than its two closest neighbors, Canada and Mexico. Leaders of the three countries can build off of NAFTA to create a more seamless market by negotiating a common external tariff, eliminating restrictions on transportation and services, funding new continental infrastructure, and fostering a sense of community among North Americans.

IBM chairman, president, and CEO Ginni Rometty discusses the use of big data and the ways in which organizations are learning to compete in a new landscape.

This account of what led to the [Anwar al-]Awlaki strike, based on interviews with three dozen current and former legal and counterterrorism officials and outside experts, fills in new details of the legal, intelligence and military challenges faced by the Obama administration in what proved to be a landmark episode in American history and law.

Ray Takeyh calls for "a more imaginative re-conceptualization of the existing diplomatic paradigm," between the United States and Iran.

By refocusing from more militarized bilateral security assistance to institution building, Mexico and the United States can work together to strengthen the rule of law, to the benefit of both countries.

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Micah Zenko calls for a historical accounting of U.S. targeted killings.

The death of Hugo Chávez leaves much uncertainty in Venezuela. But Shannon O'Neil says stronger ties with the United States may be on the horizon.

Antitrust law, which has evolved primarily through landmark Supreme Court cases, plays an essential role in the maintenance of efficient markets and promotion of long-term U.S. economic prosperity.

Moisés Naím and Fareed Zakaria discuss the transformation of power and what this means for U.S. primacy and how it conducts foreign policy.