Study: Low Risk of Terrorist Attack in U.S.

Terror alert blue or even green then?

In an era of terrorist plots and WMD proliferation, this news may come as a slight relief: Among countries with the highest risk of terrorist attacks, the United States ranks "relatively low," according to a new study.

The University of Maryland collected data on 104,000 instances of terrorism in 158 nations, and ranked the likelihood of each country witnessing a terrorist attack within its borders.