The Kuznetsov will head back to Severomorsk after 2 months stationed off Syria's coast
Many civilians are thought to be amongst the dead in rebel-held Azaz on the border with Turkey
The US-led coalition said Mahmud al-Isawi was a long-standing member of the Islamic State.
Raqqa is at the centre of an ongoing offensive against the Islamist militant group.
The area in western Anbar was one of the first captured by the Islamic State in 2014.
It is the second time Russia has announced a withdrawal of forces from Syria.
The execution comes as Iraqi forces intensify their offensive against Daesh fighters to liberate Mosul.
UN's Syria adviser Jan Egeland warned the act was a war crime.
Wrangling over the base is the latest round of international posturing over the civil war in Syria.
As someone who studies female supporters of Isis, it's clear the writers have done their homework.
Blast is the first car bomb attack in Syria since the start of a shaky ceasefire in the country.
Walid Shekhi, 40, opened the restaurant in Kobani, which was liberated by Isis in January 2015.
The US-led coalition backs the Kurdish forces in Syria who are advancing against Isis-held Raqqa.
Oil is a crucial source of revenue for the Islamist militant group which uses the funds to carry out terrorist attacks.
Free Syrian Army groups will not attend peace talks in Kazakhstan despite ceasefire largely holding.
Ryan Lock's death near Raqqa makes him third Briton to fall battling Isis.
He was convicted 40 years ago of using diplomatic status to smuggle arms to Palestinian militants.
On-the-run gunman believed to originate from Central Asia.
Islamic State has carried out successful attacks across the world despite the Mosul campaign.
Russian military offered support to Turkish operation in al-Bab for the first time.
Previous ceasefires have been broken but there is optimism this one can hold.
The militant had reportedly been deployed to shore up defence of Tabqa Dam.