Instead, the technology is aimed at what the United States views as “rogue” states, such as Iran or North Korea.
“They know very well that it’s not about them. Our missile defense has never been about them,” White said.
She added that the U.S. focus in addressing Russia’s nuclear modernization was strengthening America’s own nuclear forces to serve as a deterrent.
Lisbeth Gronlund, senior scientist and co-director of the Global Security Program of the Union of Concerned Scientists, said Putin’s announcement of a missile with a nuclear-powered engine, even if true, would change little when it came to the Russian threat since Russia already has large numbers of ICBMs.