Militant Islamist fighters hold the flag of Islamic State (IS) while taking part in a military parade along the streets of northern Raqqa province in this June 30, 2014 file photo.
Militant Islamist fighters hold the flag of Islamic State (IS) while taking part in a military parade along the streets of northern Raqqa province in this June 30, 2014 file photo.
Credit:

Stringer/Reuters

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