LOL! You are the one who doesn’t know anything (except Putin propaganda).
It’s a provable FACT. Russia has NO technology industries to build such weaponry. Russia has no advanced microelectronics industry (they imported most from the West and Asia). Russia has no advanced software industry (they imported most from the West). Russia has no ball bearings industry (they imported most from the West). Russian industry lags behind in many other areas too.
Furthermore, Russia’s “stealth” jets and other advanced weapons are wooden models and not one is in service. NOT ONE has ever been seen anywhere for that matter.
Russia is the world leader in Fake News so they fool the media easily.
In this case, I’m shinola and your shyt.
Rattling around in your otherwise empty brain pan, is nothing but CNNMSNBCABCCBSFOX and y'alls all time favorite The Daily Smell, propaganda. Your only defense is to roll out the smear of Russian propaganda, like I believe it. What you neoclowns can't grasp, the entire world is lying to you. It's all propaganda. Since you are the consumer being targeted, they love you with all their worth.
"It’s a provable FACT.". Then prove it. Waiting..............