CNN was first to report on the incident.
The incident came as Russian Federation once again protested against repeated US actions against forces allied with Syria and United Nations Secretary-General Antonio Guterres warned that the incidents could be "very dangerous" and cause an escalation of the war. "It again had dirty wings; it was carrying ordnance". How permanent they may or may not be remains unclear. And, he says, it may be hard for the U.S.to avoid conflict in Syria. "We oppose Assad, but our main enemy is ISIS, which also opposes Assad. I'll leave it to the Russians to state their level of participation".
The shooting down of a Syrian warplane near the central Syrian city of Raqqa, where US-supported Syrian Democratic Forces are deployed to help capture the city from Daesh gangs, threatens to escalate tensions over Syria between Moscow and Washington.
"The deconfliction channel remains active and in use", Pickart said.
However, the SU-22 dropped bombs on SDF positions a few hours later, the Pentagon said, and "in accordance with rules of engagement and in collective self-defence of Coalition-partnered forces [the plane] was immediately shot down". He also confirmed that there have been recent instances in which ground-based air defenses have been directed at coalition planes.
Those local forces, which the USA calls the Syrian Democratic Forces, or SDF, are now fighting to recapture the extremists' self-declared capital of Raqqa.
Countering Iran and Russian Federation requires tactical defense by US -backed forces, like that recently ordered by commanders on the ground.
The dispute over the Syrian attack on the US -backed fighters and the American response came as Iran launched ballistic missiles at Islamic State strongholds in eastern Syria in retaliation for a pair of attacks by extremists in Tehran earlier this month that killed 17 people. Russian Federation backs Syrian President Bashar al-Assad, whom Iran also supports, while the USA -led coalition is aligned with groups that oppose the Assad regime and ISIS.
The official said the U.S. pilot saw the Syrian pilot eject and saw a parachute deploy, but the USA believes the pilot would have landed in ISIS-controlled territory in Syria.
Around the end of May, the Syrian Army captured nearly 100 square kilometers in the desert sparsely populated Badia area a huge area that stretches to the southern border of Syria with Jordan and Iraq.
There are concerns that further confrontations could lead to a breakout of hostilities that would hinder the battle against the Islamic State.
"Any flying objects, including planes and drones of the worldwide coalition, discovered west of the Euphrates River will be tracked as aerial targets by Russia's air defences on and above ground", said Russia's defence ministry.
"ADF personnel are closely monitoring the air situation in Syria and a decision on the resumption of ADF air operations in Syria will be made in due course", she added.
The missiles were apparently in response to an IS-claimed attack on the Iranian parliament earlier this month which killed more than a dozen people.
Sharif says the missile launch reflects Iran's "military power" though Iran has no intention of starting another war.
Still, the Pentagon said it had not seen hostile action by Moscow.
Australia is part of the coalition fighting the Islamic State of Iraq and the Levant (ISIL, also known as ISIS) in Iraq.
The thing is, these USA commitments only make sense if they are being made with a long-term strategy in mind.
The competition between the Syrian army and the militias and USA -backed Free Syrian Army (FSA) rebels has stepped up in the Badia desert that stretches to the Iraqi border after Islamic State abandoned large swathes of territory as it defends Raqqa and Deir Zor. The truce was meant to be extended but now appears to have collapsed.
The Syrian army said the plane was hit while on a mission against IS Jihadists and warned of "the grave consequences of this flagrant aggression". He spoke on condition of anonymity in line with regulations.
"The situation is back as it was in Daraa city and fighting is ongoing", said Daraa-based opposition activist Ahmad al-Masalmeh.