> The USSR, now Russia, entered in the 1950s, when the technology was still new and the Western advantage was much smaller, and they still, over their entire history, did not produce a civil or military engine that had parity with West.

Interesting reading. Sadly, once I encountered this, I realized the article was extremely biased. The USSR successfully achieved this several times.

I suspect this article will age badly after WS-15 goes live. China has significantly narrowed the gap.