Who told you there are no composite materials in Su-57? Around 25% of the structural weight and almost 70% of the outer surface are made of composites. It may be even bigger in coming 2nd stage jets.
Grey color - composite materials.
Interesting fact that among Europeans mostly Slavic peoples represented: Russia, Croatia, Bulgaria, Belarus, Poland, Ukraine, Slovakia, Czechia. And there are only 2 non-Slavic European countries - Romania and Italy.
It reminds me the old anecdote.
A woman stands on the balcony, and a man walks by.
The woman, suddenly, shouts:
- Man! I am afraid of you!
- Why are you afraid of me?
- You will rape me!
- How can I rape you if I am downstairs and you are on the 4th floor?!
- I will go down to you!
Britain became soft and sissy - in 19 ct. they were brave super power and attacked Crimea in alliance with France and Turkey. Now they went 3 km deep in Crimean waters and see it like some act of bravery.
Fake. Millions of Russian citizens are Brown and Mongoloids and we live with them longer...
The passage of third power's warships through the Turkish Straits is regulated by the Montreux Convention. So they have the right to pass, but under restrictions.
https://en.wikipedia.org/wiki/Montreux_Convention_Regarding_the_Regime_of_the_Straits