Israeli airstrikes on Iranian weapons and missile depots near Damascus, Syria, kill six foreign nationals, according to the Syrian Observatory for Human Rights. The headquarters of the Syrian Army's 4th Armoured Division is also hit.
The Israeli Air Force launches several airstrikes on targets inside Syria, and for the first time, publicly claims responsibility. Syrian air defenses responded by launching missiles at the aircraft, and thereupon Israeli Arrow 3 missiles were launched in response to the counter-offensive. Israel stated that it was targeting suspected weapons shipments to Hezbollah in Lebanon, adding that the Israeli military will keep intervening until they believe such shipments have ceased. According to the Syrian Army, four Israeli jets entered its airspace and struck targets near Palmyra.
The United States acknowledges that its warplanes may have hit a Syrian Army position near Deir ez-Zor Airport in eastern Syria, while conducting an operation against ISIL, killing more than 60 Syrian troops.
Airstrikes by Syrian or Russian warplanes on ISIL's de facto capital Al-Raqqah in northern Syria, leaves at least 39 people dead, according to the Syrian Observatory for Human Rights. Airstrikes on the city of Palmyra and nearby villages are said to have killed at least 18 ISIL militants, as the Syrian Army advance on the city.
The Syrian Army, backed by Hezbollah militiamen and Russian airstrikes, retakes full control of the strategic town of Al-Shaykh Maskin in Syria's southern Daraa Governorate, according to the Syrian Observatory for Human Rights.
Following Russian airstrikes, the Syrian army and allied Lebanese Hezbollah militia take control of a highland area in Idlib province close to insurgent-held positions, according to the Syrian Observatory for Human Rights.