Syrian fighter jets flown by forces loyal to President Assad have this morning reportedly resumed bombing of the rebel-held town of Ras al-Ain on the edge of the Turkish border.
The attack, seen by a Reuters witness, sent thick plumes of smoke into the air for the second day.
Yesterday's attack saw scores of Syrians flee over the border, days after rebels gained control of the town.
Thousands more refugees pour across the border to escape the war in Syria, whilst Turkey says the conflict is threatening their security.
A suggestion that David Cameron has gone "out on a limb" over Syria has been rejected by his official spokesman.