(Veiled women walk past a billboard that carries a verse from Koran urging women to wear a hijab in the northern province of Raqqa March 31, 2014. The Islamic State in Iraq and the Levant (ISIL) has imposed sweeping restrictions on personal freedoms in the northern province of Raqqa. Among the restrictions, Women must wear the niqab, or full face veil, in public or face unspecified punishments "in accordance with sharia", or Islamic law. REUTERS/Stringer )

(Veiled women walk past a billboard that carries a verse from Koran urging women to wear a hijab in the northern province of Raqqa March 31, 2014. REUTERS/Stringer )