Although the overall risk of a terrorist attack on U.S. soil has decreased slightly, the risk of an extreme event occurring within the next five years has grown, according to a new report from Risk Management Solutions.

RMS on Thursday released its fourth annual U.S. Terrorism Risk Model. Although the analysis showed that anti-terrorism measures have reduced the risk of an attack on U.S. soil, the risk of terrorist activity continues to increase globally and the risk of extreme events over the next five years, including terrorist attacks using chemical, biological, radiological, and nuclear weapons, has increased.

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