Jordanian Foreign Minister Ayman Safadi was in Moscow on Wednesday for talks with his Russian counterpart Sergey Lavrov.
Rebels in Syria's south on Wednesday discussed a Russian proposal to hand over their remaining territory in exchange for a halt to the regime's blistering offensive, rebel sources said.
Jordan on Sunday mediated in a new round of talks between rebels in the southwest and Assad's main ally Russian Federation, seeking a wider truce in the area to avert more bloodshed and another wave of displaced people near its border.
The number of displaced has multiplied in the past week, despite talks over the weekend between rebel Free Syrian Army groups and Russian Federation to cede territory.
But other opposition bodies have rejected the deals. "We're facing a real humanitarian crisis in southern Syria", he added.
A week ago the global organisation said that 160,000 people had been displaced.
The government's offensive has undermined a "de-escalation" agreement negotiated by the United States, Russia and Jordan in July 2017.
Most of those escaping the fighting have fled to the borders with Jordan and the Israeli-occupied Golan Heights.
The UN has warned of a humanitarian catastrophe in the southwest caused by the fighting.
Malkawi said the United Nations was awaiting the "right time" to begin distributing aid in accordance with the world body's working principles. The opposition wanted to surrender them in stages after tens of thousands of displaced people returned home, he said.
An opposition source from the south with close knowledge of the talks said Russia's piecemeal approach to the deals had hamstrung the negotiating committee.
This comes as several towns have accepted to embark on a reconciliation process with the Syrian army in Daraa, while other towns have been retaken through military action.
Spokesman Ibrahim Jabbawi said the talks had not produced "any results" because Moscow had insisted rebels hand over their heavy arms in one go.
In a statement during the 38th ordinary session of the Human Rights Council, which discusses the 7th item on the situation of human rights in Palestine and other occupied Arab territories, Ambassador Ala said that this item (7th item) is becoming increasingly important as the crimes of the occupation authorities escalate and their violations of worldwide law and fundamental human rights in the occupied Palestine and in the occupied Syrian Golan increase.
Fierce battles were still ongoing around Daraa city, near the Jordanian border, where the army had repeatedly failed to capture a disused air base, rebels said.