Iran is proud of its new hypersonic missile.
Iran claims it has developed a hypersonic missile (msn.com)
Tehran — Iran has developed a
hypersonic missile capable of penetrating all defense systems, General Amirali Hajizadeh, the commander of its Revolutionary Guards aerospace unit, claimed on Thursday.
Hypersonic missiles, like traditional ballistic missiles which can deliver nuclear weapons, can fly more than five times the speed of sound.
"This hypersonic ballistic missile was developed to counter air defense shields," Hajizadeh said, quoted by Iran's Fars news agency. "It will be able to breach all the systems of anti-missile defense."
The general said he believed it would be decades before a system capable of intercepting the missile was developed, declaring it "a great generational leap in the field of missiles."
As an old pistol instructor used to advise me:
speed is fine but accuracy is final. 
I wonder how good the guidance systems are.