US-backed forces, Syrian army advance separately on Daesh in Deir al-Zor

US-backed militias and the Syrian army advanced in separate offensives against Daesh in eastern Syria on Saturday, piling pressure on shrinking territory the group still holds in oil-rich areas near the Iraqi border.

The Syrian Democratic Forces (SDF), a US-backed alliance of mostly Arab and Kurdish fighters, launched a new operation against the jihadists in the north of Deir al-Zor province that aims to capture areas north and east of the Euphrates river.

Syrian government forces and their allies, backed by Russia and Iran, meanwhile seized an oilfield from militants on the other side of the Euphrates and recaptured part of a road linking Deir al-Zor to areas held by Daesh further downstream.

The advances against Daesh in territory it has held for years as part of its self-declared caliphate will likely bring US-backed forces and the Syrian government side into closer proximity.

A US warplane shot down a Syrian army jet near Raqqa in June and the SDF accused the Syrian government of bombing its positions, showing the risk of escalation between warring sides in a crowded battlefield.

The Syrian conflict, which started as a popular uprising against President Bashar al-Assad in 2011, has drawn the military involvement of most world powers. Peace talks have repeatedly failed to bring an end to the war.

Read: As Syria war tightens, US and Russia military hotlines humming

SDF focused on the bank of the Euphrates

The SDF operation in Deir al-Zor province aims to capture areas in its northern and eastern countryside and advance towards the Euphrates, the Deir al-Zor Military Council, which is fighting as part of the SDF, said in a statement.

“The first step is to free the eastern bank of the Euphrates and the areas Daesh still holds,” Ahmed Abu Kholeh, head of the military council, told Reuters after the announcement. “We’re not specifying a timeframe but we hope it will be a quick operation,” he said.

Abu Kholeh would not say whether there were plans to advance on Deir al-Zor city itself. “We don’t know how the battles will go after this,” he said.

He said SDF fighters did not expect clashes with Syrian government forces as they advance, but if fired upon “we will respond”.

The Syrian Observatory for Human Rights monitoring group reported SDF forces had advanced against Daesh in Deir al-Zor’s northwestern countryside, seizing several hilltops and a village.

Read: Two Russian soldiers killed by shelling in Syria’s Deir Ez-Zor province

Syrian Army Takes Oilfield

Syrian government forces and their allies meanwhile recaptured from militants the Teym oilfield southwest of Deir al-Zor city, on the other side of the Euphrates, state TV reported.

They also seized part of a main highway running from Deir al-Zor downstream to the city of al-Mayadeen, to which many Daesh militants have retreated, the British-based Observatory said.

That advance would help block potential Daesh reinforcements from al-Mayadeen, it said.