the nuclear triad is the three modes of delivery of nuclear weapons:
they are the ICBMs ( Intercontinental Ballistic Missiles), bombs loaded on Bombers or bombs loaded on submarines,.
| Country | Warheads active/total* | Year of first test | CTBT status |
| Five nuclear weapons states from the NPT | |||
| United States | 2,468 / 9,600 | 1945 (“Trinity“) | Signatory |
| Russia (former Soviet Union) | 4,650 / 12,000 | 1949 (“RDS-1“) | Ratifier |
| United Kingdom | 1952 (“Hurricane“) | Ratifier | |
| France | ~300 / 300 | 1960 (“Gerboise Bleue“) | Ratifier |
| China | ~180 / 240 | 1964 (“596“) | Signatory |
| Non-NPT nuclear powers | |||
| India | n.a. / 60-80 | 1974 (“Smiling Buddha“) | Non-signatory |
| Pakistan | n.a. / 70-90 | 1998 (“Chagai-I“) | Non-signatory |
| North Korea | n.a. / | 2006 (2006 test) | Non-signatory |
| Undeclared nuclear powers | |||
| Israel | n.a. / 80 | possibly 1979 (See Vela Incident) | Signatory |
*All numbers are estimates from theNatural Resources Defense Council, published in the Bulletin of the Atomic Scientists, unless other references are given. The latest update was on May 26, 2010. If differences between active and total stockpile are known, they are given as two figures separated by a forward slash. If specifics are not available (n.a.), only one figure is given. Stockpile number may not contain all intact warheads if a substantial amount of warheads are scheduled for but have not yet gone through dismantlement; not all “active” warheads are deployed at any given time. When a range of weapons is given (e.g., 0–10), it generally indicates that the estimate is being made on the amount of fissile material that has likely been produced, and the amount of fissile material needed per warhead depends on estimates of a country’s proficiency at nuclear weapon design.
Source: http://en.wikipedia.org/wiki/List_of_states_with_nuclear_weapons
Kalamawi 