*The biggest arms customers of Russia and China is from Iran. Iran even sends their officers to be trained in Russia.*
So what? Up until 22 June 1941, Russia still supplied Germany with raw materials and foodstuffs. If Iran could take out Russia, it would. Why not? You don’t think they might harbor some anger over the way Russia has treated Muslims in the past?
No. Russia is helping Iran build their military and helping them build them an atomic bomb. Its called business and $$$$$$.