What is a "responsible" nation ?

Apparently, any nation that has ALREADY developed nuclear weapons (NWS -- Nuclear Weapons State) can arbitrarily declare itself as "responsible". The countries that have currently developed nuclear weapons (in chronological order) are United States (1945), Russia (1949), UK (1952), France (1960), China (1964), India (1974), Pakistan (1998), North Korea (2006). Presumably, each of these states started off as "rogue" nations but as soon as they developed nuclear weapons, they magically transformed themselves into "responsible" nations. The fact is, nations with nuclear weapons have double-standards. They can have their weapons but no one else can. And if anyone tries to develop their own, they are immediately classified as "rogue" nations. An example of the hypocrisy is the case of India and Pakistan who were censured for causing nuclear instability in the region, but are now criticizing North Korea for doing the same. India, Pakistan, United States and all the other NWSs are not inherently more or less responsible than North Korea.

The reason most nations are currently developing nuclear weapons is because that is the only way they can avoid being intimidated (or even attacked outright) by the NWSs. It is extremely unlikely that the United States will attack any country that has nuclear weapons. This has been proven over and over by the US when it attacks defenseless countries.

NWSs are "responsible" for proliferation of nuclear weapons all over the globe and for creating severe instability. And how can a nation that has actually used nuclear weapons (the pioneer) claim to be "responsible" ?

Check out the timeline of the Doomsday Clock to get any idea of the severity of the problem. Unless, the proliferation stops soon, its time to start singing "Two Minutes To Midnight"