The drill used four different kinds of warplanes in a joint assault.
The Kremlin's brief assessment described the work as tense and heroic.
The Syrian Observatory for Human Rights reported civilian casualties in Idlib.
Moscow's new base plans for deployment of land, air and sea defenses as tensions over Aleppo airstrikes grow.
Almost 5,000 Russians voted from Syria, which is four times higher than usual.
We must do right by Syrian victims like five-year-old Omran, says Mina Al-Oraibi.
The deal was struck last year and parliament is set to ratify it.
The Syrian Observatory for Human Rights calls on Moscow to cease killing of Syrian people.
A Russian-backed offensive drove ISIS out of the ancient city over the weekend.
National daily 'Kommersant' estimates the operation has more than paid for itself.
The remaining Russian forces will continue to hit ground targets in Syria.
The Syrian Network for Human Rights estimates that Russia and Assad killed the most children.
A Kremlin spokesman said Russia had "efficiently changed the situation" in Syria.
A Kremlin spokesman alleged that the U.S. may have been behind the strikes.
Germany's General Lieutenant Joachim Wundrak says Moscow's air pursuit is a political move.
The Syrian Network for Human Rights has published new statistics on civilian deaths.