Over the past thirty years it has been reinterpreted to extend it to cover many different kind of weapons and these weapons are much more available than they used to be.
I believe the the present interpretation does allow for the carrying of weapons such as swords, axes and other bladed weapons although it is possible, even probable, that you may run afoul of state or local laws and ordinances that restrict open carrying but I would hazard a guess that you could fight the local laws and the 2nd Amendment would carry. It would depend on how much you are willing to expend.
As for nukes, well, you can see that while we, as a country, have them we want to restrict the ability of other countries to possess the same. I doubt that we will ever allow for open carry personal thermonuclear weapons.