The newest Russian missile, “Avangard,” which can travel at speeds up to Mach 20, makes US defenses totally useless because US counter-missiles can only travel at Mach 5, says one military expert. According to Alexey Leonkov, a former employee of the 30 Central Research Institute of Russia’s Aerospace Force, the newest hypersonic missile that Russian President Vladimir Putin presented today makes US missile defense systems completely useless.