Um, it seems to me you'd direct your submarine close to the coast of a city and your missile launch would not need ICBMs.<p>In fact, I am worried about TacNukes - like the kind we see in James Bond movies - being smuggled INTO A CITY!<p><a href="https://www.wired.com/2002/11/nukes-2/" rel="nofollow">https://www.wired.com/2002/11/nukes-2/</a><p>Here is an article about loose nukes.<p>North Korea has ALREADY given Syria nuclear material to build a functioning nuclear weapons facility. Google "operation orchard".<p>I am worried that, as soon as we attack its regime, some sleeper group would use nukes somewhere.<p>And what do we do in general with rogue nukes? How exactly are they accounted for across every country?