Changes include giving the Russian language a special status, and granting more say to local governments.
Push by President Bashar al-Assad's troops in the central city comes as bomb explodes outside a mosque, killing 14.
Hamid Aboutalebi has acknowledged acting as an interpreter for the group that took part in the 1979 US Embassy takeover.
Egyptian police officer killed in bomb attack on traffic police kiosk in Cairo's busy Lebanon Square.
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101 East15 Nov 2013 09:37 GMT
101 East explores the impact of a lost generation of leaders in Kandahar, an Afghan city known for its lawlessness.
Lifelines17 Apr 2014 20:05 GMT
River blindness causes relentless itching and blindness, affecting the poorest communities in the world.
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Three years since the start of the uprising, nine million people have been displaced by fighting.
An in-depth look at Egypt's ongoing political crisis.