Representatives of other security agencies are also participating Tuesday in the discussions, which are focused on the recent U.S.-Russia cease-fire agreement for Syria as well as on Iran.

The agreement, announced in a joint U.S.-Russian statement Saturday, calls for “the reduction and ultimate elimination” of foreign fighters from southern Syria, including Iranian troops and proxies. However, it does not set a timetable.

According to an Israeli official, militias would be allowed to maintain positions as close as 3 to 4 miles to some parts of the border while being pushed up to around 19 miles away in others, Reuters reported Monday.

However, Russian Foreign Minister Sergey Lavrov said Tuesday that the agreement does not include a Russian commitment to ensure Iran-linked militias are pulled out of the country. Lavrov said Iran’s presence in Syria is “legitimate,” according to the Interfax news agency.

Prime Minister Benjamin Netanyahu announced Monday that Israel will not be bound by the deal.

“I have clarified to our friends in Washington and our friends in Moscow that we will operate in Syria, including southern Syria, in accordance with our understanding and in accordance with our security needs,” Netanyahu said, describing Israel’s security policy as “the right combination of firmness and responsibility.”

On Friday, a Western security official told the BBC that Iran was setting up a permanent base on a site used by the Syrian army near el-Kiswah, 8 miles south of Damascus and 30 miles from the Israeli border.

Israel Defense Forces Chief of Staff Gabi Eisenkot reportedly flew secretly to Brussels on Thursday to meet with Gen. Curtiss Scaparrotti, head of the U.S. Army’s European Command, and discuss Iranian moves in Syria.