Satellite imagery show that Russian naval ships have left Moscow’s base at Tartous on Syria’s coast and some have dropped anchor offshore following the overthrow of Syrian President Bashar al-Assad by opposition forces.An image taken on Dec. 9 by Planet Labs showed at least three vessels in Russia’s Mediterranean fleet, including two guided missile frigates and an oiler, moored around 13 km (eight miles) northwest of Tartous. The rest of the fleet could not be immediately located in satellite imagery.In Moscow, Russia’s defense ministry did not immediately respond to a Reuters request for comment.For all the latest headlines follow our Google News channel online or via the app.Syrian opposition fighters seized the capital Damascus on Sunday after a lightening advance that sent al-Assad fleeing to Russia after a 13-year civil war and 54 years of his family’s autocratic rule.Moscow, which was an ally of the al-Assad regime for decades, is now scrambling to make a deal with the opposition