Israel drops 'earthquake bomb': Colossal explosion 'so big it registered on the Richter scale' hits Syrian coast as air strikes target weapons depots after fall of Assad regime 'Colossal' explosions have filled the skies in Syria as Israeli strikes are said to have targeted military sites in the 'the heaviest strikes' in the area for more than a decade - with blasts which registered on earthquake sensors.
A war monitor group said that Israeli strikes had targeted military sites in Syria's coastal Tartus region.
Tartus has been the location of one of Russia's two military bases in Syria and was used as a naval base, as well as an ammunition depot.
The air strikes now raise more questions about the future of the Russian assets in the country, including the Hmeimim military airfield.
Russia's foreign ministry earlier today said it had evacuated some of its diplomatic staff from Syria, a week after the fall of the nation's dictator Bashar al-Assad.