Israel to Russia: Assad's safe from us, but Iran must quit Syria

* Israel wary of Assad troop movement in Golan vicinity

* Syrian drone downed over Israel, may be errant - military (Releads for Netanyahu's message to Putin)

By Dan Williams and Gleb Stolyarov

JERUSALEM/MOSCOW, July 11 (Reuters) - Israeli Prime Minister Benjamin Netanyahu told Russia on Wednesday that its ally Syrian President Bashar al-Assad would be safe from Israel, but Moscow should encourage Iranian forces quit Syria, a senior Israeli official said.

The message, which the official said Netanyahu conveyed in talks with Russian President Vladimir Putin, came just hours after Israel shot down what it described a Syrian drone that had penetrated its airspace, underscoring the frontier's volatility.

Israel has been on high alert as Assad's forces advance on rebels in the vicinity of the Golan Heights, much of which Israel captured from Syria in 1967 and annexed in a move not recognised internationally. Israel worries Assad could let his Iranian and Hezbollah reinforcements entrench near Israeli lines or that Syrian forces may defy a 1974 Golan demilitarisation.

"They (Russia) have an active interest in seeing a stable Assad regime and we in getting the Iranians out. These can clash or it can align," the Israeli official said.

"We won't take action against the Assad regime," the official quoted Netanyahu as telling Putin in Moscow, and added the Israeli leader came away reassured that "they (Russia) are getting the Iranians out".

Russia was working to distance Iranian forces from the Golan and had proposed that they be kept 80 km (50 miles) away but this fell short of Israel's demand for their full exit along with that of Tehran-sponsored militias, the official said.

A second Israeli official told Reuters that Netanyahu's message did not constitute any "quid pro quo" offer to Russia.

Russian officials had no immediate comment on the meeting.

Since turning the tide of Syria's civil war by intervening militarily in 2015 on Assad's behalf, Russia has turned a blind eye to scores of Israeli air strikes against Iranian and Hezbollah deployments or arms transfers, while making clear it wanted Assad kept immune.

Israel said a Syrian drone, apparently unarmed and designed for surveillance, entered its airspace and was downed with a Patriot missile near the Sea of Galilee on Wednesday. The interception set off sirens on the Golan and nearby Jordanian border.

"We are still looking into why it crossed - whether it was on a military mission and crossed on purpose, or it strayed," said Lieutenant-Colonel Jonathan Conricus, an Israeli military spokesman. He added that the latter scenario was "not common".

Israeli cabinet ministers threatened this week to fire on Syrian forces that enter the Golan buffer zone set up as part of a 1974 U.N.-monitored armistice. The United Nations last month renewed the mandate of its Golan observer force UNDOF and on Wednesday called on all parties to abide by the armistice.

"There should be no military forces in the area of separation other than those of UNDOF,” a U.N. spokesman said.

Israel has signalled openness to eventual ties with Assad, a tacit acknowledgement that he is re-consolidating power as he routs Syria's rebels.

Under Assad family rule, Syria held direct negotiations with Israel in the United States in 2000 and indirect talks mediated by Turkey in 2008. Netanyahu's government has made clear it would not now cede the Golan and has been lobbying for U.S. recognition of Israel's claim of sovereignty there.

On June 24, Israel’s military said it launched a Patriot missile at an incoming drone from Syria, which turned away unscathed. A Syrian commander said the drone was engaged in local operations. On July 6, Israel struck a Syrian post that it said had shelled the Golan buffer zone. (Additional reporting by Michelle Nichols in the United Nations; Writing by Dan Williams Editing by Jeffrey Heller and Peter Graff)