You really are mentally retarded! No wonder, Your Viet Nam compatriots despise you! You are Vietnam's shame! Reduces Vietnam's intelligence quotient! Discredits Vietnam the image! Talked with you, said that many will only reduce our intelligence quotient! Now, lets my last time, Answers you this Stupid question!
I have already described many times, BrahMos improvement,still can not do without the help of Russia,as of now the Russian ramjet engine technology, biggest supports 550 kilometer supersonic flights! Nowadays's missile, Based on ballistic divided into ballistic missile and cruise missiles, Cruise missiles and divided Supersonic and subsonic, but Brahmos belongs to the supersonic speed cruise missile. Although today's supersonic cruise missile speed up to more than twice the speed of sound, But the firing distance receives the serious restriction; Comparatively, subsonic speed cruise missile, although the speed is slow, but the maneuver capability is stronger, Range can easily break 1000 km. Now the world, the firing distance surpasses 1000km the cruise missile is the subsonic speed.
As a result of present Russia's jet engine ramming technology limit ,Can't help Vietnam upgrade 1000 km of supersonic cruise missile. Therefore, you could not evade this fact ,you = stupid, ignorant, fantasy = mentally retarded!
Finally, I advise you: leave the PDF, here is normal person's discussion place, Here does not suit you! Perhaps, Only the Vietnamese forum suits you, Only then can display you fully IQ !