The Government has published its advice on military action in Syria, stating that the legal basis for any such action would be "humanitarian intervention".
It said "if action in the Security Council is blocked, the UK would still be permitted under international law to take exceptional measures".
More top news
TV favourite Cilla Black, who has died aged 72, gave viewers a "lorra, lorra laughs" during her long career.
Some rain in the north. Very warm sunshine in the south
Blind Date and Surprise Surprise star Cilla Black,72, has died, according to reports.