Last week witnesses and rescuers said that Russian jets bombed villages and towns near Idlib, killing at least nine civilians and wounding dozens in a major flare-up.
Air strikes and anti-aircraft missile fire hit overnight in the Omdurman and Khartoum, two of the three cities that make up Sudan's wider capital.
The United States and Saudi Arabia said the two factions had agreed to a new 72-hour ceasefire that would begin on Sunday morning.
Talks in Jeddah have failed to permanently end fighting and clashes intensified as soon as a ceasefire ended on Sunday.
The new agreement calls for a seven-day ceasefire to begin 48 hours after signing. Numerous previous ceasefire agreements were violated.
The adviser was identified as Milad Heydari. "The fake and criminal Zionist regime will undoubtedly receive a response to this crime," warned the IRGC.
The ministry called on all air carriers to reschedule all flights and said the airport is ready to receive relief aid planes for earthquake victims.