ANKARA, April 7 (Xinhua) -- The United States informed Turkey before it attacked a Syrian base at Friday dawn, Foreign Minister Mevlut Cavusoglu told a local media on Friday in Antalya.
"U.S. Ambassador to Ankara John Bass contacted our (Foreign Ministry) Undersecretary Umit Yalcin," Cavusoglu said.
Information on the attack was also diffused through the coalition members fighting against the Islamic State (IS), Cavusoglu said.
Cavusoglu also said he had spoken with the French and German foreign ministers by phone, without specifying when.
He also said contacts had been initiated with Russian Foreign Minister Sergei Lavrov and U.S. Secretary of State Rex Tillerson.
The minister also called for Syrian President Bashar al-Assad's immediate removal, saying a transitional government must be established.
He added that safe zones for civilians in Syria were now more important than ever.