The “Islamic State” Crisis and U.S. Policy. Congressional Research Service, Library of Congress. Kenneth Katzman et al. February 11, 2015.
The Islamic State (IS, aka the Islamic State of Iraq and the Levant, ISIL/ISIS) is a transnational Sunni Islamist insurgent and terrorist group that has expanded its control over areas of parts of Iraq and Syria since 2013, threatening the wider region. There is debate over the degree to which the Islamic State organization might represent a direct terrorist threat to the U.S. homeland or to U.S. facilities and personnel in the region.
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