How much do you know about the Islamic State? Take our quiz.

The self-proclaimed caliphate of Islamic State, also known as ISIS, is fighting across Syria and Iraq, pushing back larger armies and capturing entire cities. It is also waging an increasingly sophisticated media campaign: The militant group has recruited disillusioned youth as it tries to extend its reach across the Muslim world and beyond. How much do you know about the Islamic State? Test your knowledge.

1. Which country is the prime source of IS weaponry?

Stringer/Reuters/File
Military vehicles of Iraqi security forces are seen on a road during clashes with Islamic State militants in the Hamrin mountains in Diyala province in September 2014.

United States

Russia

Syria

Iran

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