Israel, as they refuse to acknowledge they have the weapons; and North Korea.
The country that did not sign the Central Asian-Nuclear-weapon- free-zone treaty is Afghanistan.
It signed the treaty on 11 April 1996. It ratified the treaty on 13 March 1998 and made its deposit of nuclear weapons on 27 March 1998.
Yes, England is a nuclear weapon country. It is one of the four nuclear-armed states recognized by the Nuclear Non-Proliferation Treaty (NPT). The United Kingdom maintains a fleet of ballistic missile submarines armed with nuclear warheads, known as Trident.
As far as I know nuclear weapons have never been traded between countries, so if a country has nuclear weapons it is due to their own science and technology, or to espionage activities to get the required knowledge. The other criterion is not to have signed up to the Non Proliferation Treaty, except for countries that had already developed weapons when the Treaty came into being.
canada
iraq
Iran
United States.
The meaning of the word nuclear weapon, is a weapon that has a nuclear warhead on it.
Number of nuclear weapons by country: Country # of nuclear weapons USA 10'300 Russia 16'000 China 410 France 350
Nobody, the US was the first country to work out how to actually make nuclear weapons.
US