Scenes from the front lines in Syria.
Amateur video which can not be independently verified by Reuters shows rebel forces engaged in fierce fighting in suburban Damascus.
Forces opposed to Syrian President Bashar al-Assad range from the western supported Free Syrian army to the Islamic State.
An IS video released last month, purporting to show a man with a London accent man beheading a U.S. journalist, is now raising concerns that Britons fighting in the region could return and launch attacks on British soil.
On Monday Prime Minister David Cameron announced plans to strip suspected Islamist militants of their passports temporarily, to combat the threat posed by radicalized Britons returning from Syria and Iraq.'
(SOUNDBITE) (English) BRITISH PRIME MINISTER, DAVID CAMERON, SAYING:
"It is abhorrent that people that declare their allegiance elsewhere are able to return to the United Kingdom and pose a threat to our national security.
He also anno