The Israeli military has said it has fired into Syria in response to violence again spilling into Israeli-held Golan.
An errant mortar shell from Syria landed in the Golan Heights today.
It came a day after another errant shell saw Israel fire a warning shot at the Syrian military for the first time since the 1973 Yom Kippur War.
Prime Minister David Cameron said Syria's President Bashar al Assad should face "full international justice" for his "appalling crimes".
The Prime Minister has faced questions about his promotion of arms deals during a three-day tour of the Gulf region that started today.