Yes, for sure intertial and star guidance has been in use in ICBMs forever. But if the inertial guidance is far more accurate, perhaps this changes what you can

Yes, for sure intertial and star guidance has been in use in ICBMs forever. But if the inertial guidance is far more accurate, perhaps this changes what you can do with conventional ICBM munitions. For instance being able to target something 10,000 miles away in a GPS-denied place with a 2,000 pound chemical explosive rather than using a cruise missile. Now you can take out someone’s leadership from US soil without using a nuclear warhead.