Buran

Bombarder, the presence of 'burn marks' on Buran proves nothing. Since the supposed Buran 'flight' was conducted in secrecy, that fact alone leaves the Soviets open to a conclusion that the Buran failed to make it into orbit. For all we know, the 'burn marks' were made with blowtorches. Energia also was a dud. It was too expensive to use routinely, and never demonstrated any actual reusability. Lastly, good luck with Angara. Given the poor Russian history with BIG rockets, luck will be needed.

Actually, the Saturn V was the most powerful rocket ever built....and proved clearly to have been successful, too, in that its launches were all televised. The Soviets, with their deep love of secrecy, never televised any of its cold-war era launches, including this one of Energia. As a result, we don't have any proof that Energia was successful, either. Whether it actually put the Buran all the way up in orbit is entirely unproven.

the rocket impulsor "energia" was the most powerful rocket ever builded..

And everybody copied the Germans.