Agree with this and would also add Pakistan to the list of states to worry about. They do have nukes, and the governments (if you can call them that) over the years seem to be somewhat fleeting. Worryingly the population there seems more authoritarian than most of the governments, which is unusual.
Agreed, but I worry just slightly less about Pakistan than Iran / NK.
Pakistans nukes appear to be solely reserved for the' bloody Indians'.
They can deal with China up north with pick-helves.
Kashmir with pick- helves, tear gas and a couple of bullets.
And they play cricket.
Less worries about them than Iran / NK