Russian Federation said on Monday only Syrian army troops should be on the country's southern border with Jordan and Israel, after Washington warned of "firm measures" over truce violations in the region.
Russian Federation and Israel have come to an extraordinary agreement over the role of Iranian troops in Syria, paving the way for a regime offensive against one of the last remaining rebel-held areas in the south of the country.
According to the report, the understandings were reached in a series of indirect meetings in Jordan, where Iranian officials, including the envoy to Jordan, met with top Jordanian officials, who in turn met with senior Israeli security officials..
The US warned it would take "firm and appropriate measures" in response to any violations of that ceasefire.
Sources said the two national security advisers will make changes to the agreement that reflect the "new reality" of the USA no longer being party to the 2015 nuclear agreement with Iran.
Israel wants Iran-backed forces removed from areas near its border and from Syria in general.
Israel has been pledging for months to prevent its main enemy Iran from entrenching itself militarily in Syria, where Tehran is backing President Bashar al-Assad's regime.
Jordanian officials served as mediator, shuttling messages between the two rooms, according to the report.
Israel suspects Syria's ally Iran of seeking to establish a military presence close to territory it controls and has repeatedly struck Syrian and Iranian targets in Syria when it felt threatened.
Sources added that Bolton and Ben-Shabat will also discuss joint military cooperation in countering Iran's presence in Syria.
One participant told Elaph that the Iranians "arrived at a quick agreement" that its forces would not intervene in fighting near the Golan Heights and the Israel-Jordan border, surprising the Israeli representatives.
"On the other hand, Israel made it clear to the Syrians, and especially to the Iranians, that it would not allow Iranian forces to operate alongside the Syrian army in Daraa and Quneitra, even at the price of a security escalation that could lead to a direct military confrontation with Iran".