Red Alter was a total conversion based on C&C3;: Tiberium Wars, based on own alternate history of WWII ending and later Cold War, which gone hot.
This is the fourth concept art of Hypersonic Missile Superiority Interceptor "Gagarin", drawn by our artist TheXHS. Finally, the last one :)
You concept-arts is amazing!
I'd suggest a combo of Scramjets and Turbojets instead of rocket engines ;)