What are the implications of Russia's intervention for Hizballah? Here you will find some interesting answers:

Hezbollah’s New Ally In Syria 
by Nour Samaha, Newsweek Middle East

Russia’s involvement has also seen an increase of Hezbollah fighters on the ground. Sources close to the party confirm that approximately 2,000 fighters have been added to the battlefield, specifically in the areas around Aleppo and Idlib, in the immediate aftermath of Russian airstrikes, adding more foot soldiers to the thousands already present there. 

“For example, before Russia’s [involvement] there were around 200 fighters in Aleppo and Idlib, predominantly advisors,” said one source. “Now there are between 1,500 and 2,000.”(…)