Assad sought Russia’s military backing, skipped Iran - Reuters

Russian President Vladimir Putin (R) and Syrian President Bashar al-Assad visit the Hmeymim air base in Latakia Province, Syria December 11, 2017.
Russian President Vladimir Putin (R) and Syrian President Bashar al-Assad visit the Hmeymim air base in Latakia Province, Syria December 11, 2017.

As rebels gained in the days before Bashar al-Assad's flight from Syria, his appeal for help from Moscow was rebuffed but the veteran autocrat held off seeking Iranian military support to avoid triggering Israeli retaliation, Reuters reported.