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Screenshot from a propaganda video uploaded on June 11 by the Islamic State allegedly shows militants driving at an undisclosed location in Iraq's Nineveh province.

A mourner reads the Quran on August 17, 2011 in Gaza City, Gaza. (Christopher Furlong/Getty Images)

City market, Marrakech, Morocco. (Jeremy Woodhouse/Getty Images)

Boko Haram’s leader, Abubakar Shekau, appears in a video in which he warns Cameroon it faces the same fate as Nigeria. (Boko Haram video screenshot)

Malik Mumtaz Hussain Qadri shouts, 'We are ready to sacrifice our life for the prestige of the Prophet Mohammad' Islamabad on January 5, 2011 a day after the assassination of the governor of Punjab province Salman Taseer. (AAMIR QURESHI/AFP/Getty Images)

Place Jemaa El Fna (Djemaa El Fna), August 12, 2012. (Godong/UIG via Getty Images)

Saudi Defence Minister Mohammed bin Salman (2nd L), who is the desert kingdom's deputy crown prince, at the 4th Summit of Arab States and South American countries in Riyadh, on November 11, 2015. (FAYEZ NURELDINE/AFP/Getty Images)

An Egyptian protester chants during a protest following midday prayers in Tahrir Square on September 14, 2012 in Cairo, Egypt. (Ed Giles/Getty Images)

Kashmiri protesters displaying the flags of ISIS and Pakistan on June 27, 2015 in Srinagar, India. (Waseem Andrabi/Hindustan Times via Getty Images)