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.

Amity Shlaes, an economic scholar, says she is impressed by Sen. John McCain’s New Hampshire primary win but notes that he has not traditionally concentrated on economic policy, a chief area of voter…

Anne-Marie Slaughter, dean of Princeton’s Woodrow Wilson School, discusses the long-term geopolitical implications of the financial crisis.

Without diplomatic progress over the next several weeks, world powers and Iran may squander their best opportunity for a comprehensive nuclear agreement, says expert Daryl G. Kimball.

Ties to Pakistan in the Times Square bomb case suggest a direct al-Qaeda influence on the goals of some of Pakistan’s Taliban militants, says counterterrorism expert Brian Fishman.