The Islamic State produces a steady flow of propaganda. Linda Wertheimer talks to Greg Miller of The Washington Post about the ISIS propaganda machine and its role in recruiting foreign fighters.
Unlike in an earlier case involving Anwar al-Awlaki, the federal appeals court panel says, the government has not already revealed the contents of these memos through other public channels.
Hillary Clinton, Marco Rubio and others are supporting the idea of a no-fly zone over Syria to try to help civilians there. But skeptics say it no longer has any relevance to today's Syrian crisis.
French President Francois Hollande met with President Obama at the White House Tuesday to discuss the fight against ISIS in the wake of the Paris attacks.
The Government Accountability Office says that Homeland Security's BioWatch system, deployed in 30 U.S. cities, has issued dozens of false alarms since its introduction in 2003.
NPR's Ari Shapiro talks to retired Gen. Carter Ham, former head of U.S. Africa Command, about U.S. military efforts to counter jihadist groups in Africa.
ISIS has set an unprecedented tempo of terrorist attacks. It began in October when it downed a Russian airliner near Sharm-el-Sheikh, Egypt, moved to Lebanon and now Paris all in less than a month. Counterterrorism officials say it is wrong to look at these events individually. They say this is a "campaign of terror," and it suggests some level of coordination from ISIS's leadership as well as the growing capacity of the organization.
Concern about a terrorist attack continues in Brussels where authorities have launched a series of security sweeps aimed at heading off what authorities call "a serious and imminent" terrorist threat.
With four major terrorist events in the past month, the Obama administration is under increasing pressure to bring more U.S. military might into the fight against ISIS and other terror organizations.