Russian SSBNs stay pretty close to base. They don't range over the world's oceans like US ones do, and ISTR an expert opining that the US can probably track the

Russian SSBNs stay pretty close to base. They don't range over the world's oceans like US ones do, and ISTR an expert opining that the US can probably track them. But on second thought, I concede that the shortened warning time relative to ICBMs is probably not a major cause of Russia's anxiety about Ukraine.