The Russian economy has suffered because of low oil prices and sanctions, same for Iran. No economist has contributed the war in Syria to the stagnation of the Russian economy, so don't make things up.
Russia has more money in its reserves than the entire Israeli economy and the economy is starting to grow again. Moreover, Russia does not shameless take billions of dollars each year from the US nor does it get offered the best US military equipment or get free military equipment, military funding or economic aid and then like an ungrateful little brat goes cries when it doesn't get support from UN members over illegal settlements.