After US soldiers in Syria shot down an armed Turkish drone, the senior officials from the US and Turkey spoke on the phone.
Ankara only claimed the drone was lost during operations while Washington said it flew too close to its ground forces in Syria.
Hakan Fidan informed the US that Turkey would continue to strike Kurdish groups during the phone call between the NATO allies.
Although Turkey sees the Kurdish YPG forces as terrorists and separatists, the US supports them in Syria.
Turkey’s “counterterrorism operations in Iraq and Syria will continue with determination,” Mr. Fidan assured US Secretary of State Antony Blinken.
A representative for the US State Department said Mr. Blinken had emphasized the need for Ankara and Washington to “coordinate and deconflict” their respective initiatives.
Following multiple warnings, a US F-16 fighter jet shot down the armed Turkish drone that was flying close to American troops in Syria, according to US military authorities on Thursday.
At 07:30 local time (04:30 GMT), American soldiers saw three drones conducting airstrikes in Al Hasakah in northeastern Syria, according to Pentagon spokesperson Brig Gen Patrick Ryder.
Some of the strikes were approximately 1km away from US troops, prompting them to take shelter in bunkers, Ryder said.
Four hours later, the F-16 downed the drone after commanders assessed there was a potential threat, he said.
“It’s regrettable when you have two NATO allies and there’s an incident like this,” he told reporters.
It marked the first such incident between the two Nato allies.
Following a suicide attack on its interior ministry in Ankara, Turkey has begun conducting airstrikes against Kurdish militias in Syria and Iraq.
The interior ministry bombing, according to the Kurdistan Workers Party (PKK), was carried out by a group affiliated with them.
The EU, UK, US, Turkey, and the PKK all view the PKK as a terrorist organization.
The PKK and the YPG are seen as one entity by Turkey. However, the US has been collaborating with the YPG, a member of the Syrian Democratic Forces (SDF), a coalition of forces backed by the US that has battled against IS in Syria.
After Mr. Blinken and Mr. Fidan’s phone discussion, Turkey announced that it had resumed its attacks on Kurdish targets in northern Syria.
The Turkish defense ministry said that 15 Kurdish targets, including “headquarters and shelters,” had been hit “with the maximum amount” of munitions.
In order to establish an autonomous Kurdish state within Turkey, the PKK started an armed uprising against the Turkish government in 1984.
The PKK abandoned its calls for an independent state in the 1990s in favor of more autonomy for the Kurds. In total, the fighting has claimed more than 40,000 lives.
After a two-year-old ceasefire expired in July 2015, fighting broke out once more.