Russia offers to keep Iran away as Golan frontier heats up

Moscow-backed Syrian government forces have now regained control of most of the country's two provinces near the occupied Golan Heights.

TEL AVIV - Israel launched Patriot missiles in what it described as a successful interception of a Syrian warplane that penetrated its airspace on Tuesday, but Damascus said the jet was fired on as it took part in operations against rebels on Syrian territory.

The incident took place over the Golan Heights, a strategic plateau between the two old foes and whose Israeli-occupied side has been on high alert as Syrian government forces close in with Russian support to regain rebel-held ground.

For the second time in as many days, Israeli sirens sounded on the Golan and witnesses saw the contrails of two missiles flying skyward. The military said it fired Patriots at a Syrian Sukhoi jet "that infiltrated into Israeli airspace".

The warplane was "intercepted", the military said in a statement without elaborating. Israel's Army Radio said the Sukhoi was shot down, may have crashed on the Syrian-held side of the Golan, and that the pilot's condition was unclear.

Syrian state media said, however, that a Syrian warplane had been "targeted" by Israel and hit while conducting raids in Syrian airspace.

"The Israeli enemy confirms its support for the armed terrorist groups and targets one of our warplanes, which was striking their groups in the area of Saida on the edge of the Yarmouk Basin in Syrian airspace," the official news agency SANA quoted a military source as saying.

The Israeli military statement said the Syrian plane had crossed two km (one mile) into the Israeli side of the Golan, but appeared to acknowledge that its mission was related to the civil war next door.

"Since morning hours, there has been an increase in the internal fighting in Syria, including an increase in the activity of the Syrian Air Force," the statement said.

It said Israel would "continue to operate against" any breach of a 1974 U.N. armistice deal that established buffer zones on the Golan.

Israel worries that Syrian President Bashar al-Assad might try to defy the demilitarisation regime or allow his Iranian and Lebanese Hezbollah reinforcements to deploy near the Golan.

The intensifying Israeli-Syrian tensions have prompted intercession by Moscow, which sent its top diplomat and top general on Monday for talks with Israeli Prime Minister Benjamin Netanyahu. Israeli officials said

Netanyahu rebuffed as insufficient a Russian offer to keep Iranian forces 100 km (62 miles) from the Golan lines. Israel wants Tehran to completely withdraw, an Israeli official said Tuesday.

"We won't accept Iranian military entrenchment in Syria, not near the border, not beyond the 100-kilometre stretch, which by the way the Russians talk about and agree to," the senior official said, speaking on condition of anonymity.

"We said there are also long-range weapons beyond that distance, and all the forces must leave Syria," the official said.

The Monday meeting came after Moscow-backed Syrian government forces regained control of most of the two provinces in the country's south near the Golan Heights, through a combination of deadly bombardment and Russian-brokered surrender deals.

The advance has pushed hundreds of thousands to flee southward, with Israel enabling more than 400 rescue workers and family members to cross through its territory into Jordan on Sunday for resettlement in Western countries.

Iran is Israel's arch-enemy and Netanyahu has pledged to prevent it from entrenching itself militarily in Syria. A series of air strikes that have killed Iranians in Syria have been attributed to Israel.

Both Tehran and Moscow are backing Syrian President Bashar al-Assad in the conflict.

Israel is eager to obtain guarantees that Iranian forces and allied groups, such as Lebanon's Hezbollah, are kept away from the Golan and even beyond.