The United Kingdom raises its terror threat level from "substantial" to "severe" in response to conflicts in Iraq and Syria.
American diplomats and troops in Iraq and Syria are targeted in three rocket and drone attacks in the past 24 hours, including at least 14 rockets hitting an Iraqi airbase, wounding two American soldiers.
A Department of Defense report presented to the United States Congress estimates at 499 the number of civilian deaths in US military actions during the year 2017, with more than 450 reports remaining to be assessed. The casualties occurred in Syria, Iraq, Afghanistan and Yemen.
Police in northern Greece move more than 400 Syrians and Iraqis by bus from a makeshift camp near the Macedonian border to a shelter near the northern city of Thessaloniki. More than 50,000 migrants remain stranded in Greece following European border closures, and the European Union's agreement with Turkey.
Syria's political opposition in-exile urges all Arab countries to sever diplomatic ties with Iran. The Turkey-based Syrian National Coalition declared its support for Riyadh's move, calling on "all Arab and Islamic countries to take a similar step", and criticized what it said was Iran's support for Shia militias in Syria and Iraq.
The Syrian Observatory for Human Rights reports that at least 50 United States military instructors have deployed to northern Syria from Turkey and Iraq to train Kurdish forces ahead of an assault on ISIL's de facto capital Al-Raqqah.
Iraq's military reports bombing a convoy possibly carrying Islamic State of Iraq and the Levant leader, Abu Bakr al-Baghdadi. The group was headed to a meeting in the western Al Anbar Governorate, close to the Syrian border. Eight senior ISIS figures were killed, but al-Baghdadi did not appear to be among them according to Iraqi officials.
Islamic State of Iraq and the Levant captures the border crossing at Al Waleed (al-Tanf in Syria), the last remaining border crossing between Syria and Iraq controlled by the Government of Syria. ISIL reportedly advances to within 40 km of Baghdad after their victory in Ramadi.
A BBC investigation determines that photographs circulating on social media sites allegedly covering the airstrikes on Gaza include photographs taken from conflicts in Iraq and Syria and are up to five years old.