Turkey says that it has reached an in-principle deal with the United States to give support to some elements of Syrian opposition. Over a million Syrian refugees live in Turkish territory, including many Syrian opposition figures.
Turkish President Recep Tayyip Erdoğan says his country has launched a military invasion of northern and eastern Syria. The Kurdish YPG-led Syrian Democratic Forces say that Turkish fighter aircraft strike targets and "civilian areas". Syrian state television says the Turkish artillery shelling of Ras al-Ayn, al-Hasakah Governorate, is "random", and Ayn Issa, Raqqa Governorate, is also being shelled.