"[Turkey] has been subjected to mortar fire from the Syrian side for already two days. The enemy has been identified. How can we leave it without response? We will do what needs to be done," Erdogan said.
Erdogan noted that some people in northern Syria want to establish their own state, hinting at the Syrian Kurds.
"We strongly oppose establishment of the [Kurdish] state and will not permit creation of a terrorist corridor in Syria. I expect the allies to show solidarity with regard to the issue," Erdogan stressed.
Tensions between Ankara and the Kurds was heightened in July 2015 when a ceasefire between Turkey and the Kurdistan Workers' Party (PKK), which is outlawed in Turkey, collapsed over a series of terror attacks allegedly committed by PKK members. Ankara regards the PYD and the YPG as affiliates of the PKK. On Tuesday, Turkey carried out airstrikes on Kurdish positions in Syria and Iraq.