From the OP's article-First stanza:
"...the Pole-21 anti-missile jamming device..."
Further down:
"...Russia will be virtually impenetrable to missiles using satellite navigation."
The Trident Missile (sub launched missile) uses it in conjunction with inertial nav to correct its course mid-flight.
Wow, that's one wishful thinking, especially considering lame attempt to disrupt them when missiles basically already approached their target.