The Daily Beast:
Russia has tested a new missile-defense system. And while details of the new interceptor are difficult to confirm, it’s possible Moscow has take a huge step toward deploying a missile shield similar to America’s own, much-more-sophisticated shield.
Even under the most generous assumptions, however, the Russian missile-defense probably shares a fundamental weakness with its American counterpart—an inability to stop the most powerful, long-range rockets.
Regardless, Moscow’s new missile shield could further destabilize U.S.-Russian relations by prompting the Pentagon to double down on countermeasures. In other words, an arms race.