A powerful 8.8-magnitude earthquake has shaken Russia's far eastern Kamchatka Peninsula — just 75 miles from one of its most critical nuclear submarine bases in Avacha Bay. This base houses Borei, Delta,

The Rybachiy base, which hosts nuclear-powered submarines from Russia’s Pacific Fleet, lies in a cove about 80 miles from the powerful earthquake that struck near the Kamchatka peninsula last week.

Can one seismic shock upset the equilibrium of nuclear deterrence? That question was brought into stark relief by the recent 8.8-magnitude earthquake off Russia’s Kamchatka Peninsula, which pounded the Rybachiy submarine base,