Key points: Dozens of Syrian soldiers dead in US-led strike

Defence Department says Australian jets were involved but would never intentionally target Syrian military

UN Security Council holds emergency meeting at Russia's request, US criticises "grandstanding"

Between 62 and 83 Syrian soldiers who had been fighting IS militants were reportedly killed in the air strikes around the Deir al-Zor military airport in Syria's east. The IS-linked Amaq news agency said coalition strikes also hit Islamic State positions around the airport, while there were also reports of Russian planes bombing Islamic State targets..

Situation worsening, says Russian general

Russian military officials meanwhile lashed out at both the United States and mainstream rebels over the ceasefire struck last week in Geneva. Australian aircraft were among a group of international planes taking part in an operation near Dayr Az Zawr when Russian officials advised the targets may have been Syrian military personnel, a statement said on Sunday. The Australian Department of Defense said in a statement on Sunday that it will cooperate fully with the review of the incident by the alliance, asserting that while Syria remains a dynamic and complex operating environment, Australia would never intentionally target a known Syrian military unit, nor would it provide support for ISIS, offering condolences to the families of the victims of the attack. “Defence offers its condolences to the families of any Syrian personnel killed or wounded in this incident,” the ministry said on Sunday.
Australia's Department of Defence acknowledges its participation "among a number of international aircraft" in the Deir ez-Zor air raid. It says it would "never intentionally target a known Syrian military unit or actively support Daesh (ISIS)" and offers its condolences.