Israel warned on Monday Syrian regime forces against deploying in the Golan Heights front that was demilitarized under a 44-year-old UN monitored truce. The regime is advancing on southern opposition-held areas. Backed by Russia, it launched an offensive in the southern Daraa province and is widely expected to move on opposition-held Quneitra, which is within a part of the Syrian Golan covered by the armistice. “For our part we will sanctify the 1974 disengagement agreement, and there too we will insist that every last letter be abided by, and any violation with meet a harsh response from the State of Israel,” Defense Minister Avigdor Lieberman told his parliamentary faction in broadcast remarks. On Sunday night, Syria said its air defense repelled an Israeli sorties against the T4 air base in Homs province, where seven Iranian Revolutionary Guards Corps personnel died in an April 9 attack that Damascus and Tehran also blamed on Israel. Israel, in keeping with its customary reticence on such operations, declined all comment. “Regarding yesterday - I read about it in the newspapers today and I have nothing to add,” Lieberman said on Monday. “Perhaps just one thing, that our policy has not changed. We will not allow Iran’s entrenchment in Syria and we will not allow Syrian soil to be turned into a vanguard against the State of Israel. Nothing has changed. There is nothing new.”