A top New York City police official and author of a new book on al-Qaeda, Mitchell Silber, discusses with CFR’s Ed Husain the persistent threat of a homegrown U.S. radical mounting a terrorist attack.

Members of the Nuclear Nonproliferation Treaty gathering in New York must recommit to reducing their arsenals and address new proliferation challenges, explains CFR’s Adam Mount.

Former New York Lieutenant Governor Richard Ravitch discusses the potential global economic implications of U.S. municipal debt.

Vali Nasr, Professor of International Politics at the Fletcher School, Tufts University, compares Egypt’s 2011 uprising to the 1979 Iranian revolution and 2009 Iranian Green Movement.