He said it was done more as a "notification as opposed to coordination".
In a rare rebuke to a North Atlantic Treaty Organisation ally, the US military charged that Turkish airstrikes against a valued USA -backed Kurdish militia in northern Syria came with little warning and could have endangered American advisers.
US military officials were not provided any further information about the location of the target or the objective of the strikes, only that Turkey planned to conduct strikes against terrorist targets.
Turkey has insisted that it had informed the United States and Russian Federation before launching strikes against Kurdish forces in Syria and Iraq, as Moscow blasted the bombing raids as "unacceptable" and new border clashes erupted.
"We're troubled by that", Dorrian said.
Along with the 28 believed to have been killed in the Syrian strikes - a lot of them YPG fighters - six pro-Ankara Kurdish peshmerga fighters were also killed in northern Iraq on Tuesday, in what was apparently an accident.
In Syria, U.S. troops were within six miles of the targeted area, far enough to be out of danger but close enough to cause concern about the potential for unintended bloodshed, Dorrian said. "The regime in Turkey has consistently harmed the good neighborly relations through countless violations against our citizens and fighters in northern Syria", the SDF said.
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The Turkish shelling renewed on Wednesday on the Kurdish fighters' positions in Syria's northeastern province of Hasakah, pro-government al-Watan online newspaper reported. "These are our partner forces".
Both sides however vowed to keep up cooperation in the "fight against terror" in the future, it added.
The Turkish foreign affairs ministry pushed back on these claims, stating that USA and Russian forces were adequately informed "in line with the bilateral deconfliction arrangements regarding Syria and Iraq".
The YPG meanwhile asked the US -led coalition battling IS to provide air cover over northern Syria, to protect them from Turkish and Syrian government air raids.
"Therefore, we demand and appeal to the global community to intervene to put an end to this aggression and the ongoing violations on our territory", the SDF concluded.
The Turkish military carried out airstrikes Tuesday in Iraq and Syria, saying it was targeting the Kurdistan Workers Party, or PKK, a group it considers to be terrorist. Syrian Democratic Forces continue to choke off Raqqa, the self-declared capital of the Islamic State caliphate. The SDF also includes Arab fighters. The city was also home to ISIS' main prison and served as a staging area for ISIS fighters.