The prime minister regrets the Syrian deaths, the injuries caused by the bombing

The prime minister confirmed that Australian planes were involved in the coalition exercise and withdrew when Russian officials warned that the targets could be Syrian military.

“We regret the deaths and injuries of all affected Syrian personnel,” Turnbull told reporters Sunday in New York, where he is attending the annual UN General Assembly.

He said Australia’s rules of engagement must target IS, but it’s a very complex environment.

“You will undoubtedly find arguments or problems in the next short time as to why there was no coordination or who should have advised whom,” he said.

Turnbull admitted that it remains to be seen whether the Syrian ceasefire will be jeopardized.

“Although Syria remains a dynamic and complex operational environment, Australia would never intentionally target a known Syrian military unit or actively support (Islamic State),” the Defense said earlier in a statement.