Based on the following chart of nuclear weapons and nuclear weapons history of the "nuclear
club," what can you infer about the number of nuclear weapons held by non-members of the
nuclear proliferation treaty (non-npt countries)?
country
warheads active/total year of first test
five nuclear weapons states from the npt
united states
4,075/5,535 1945 ("trinity")
russia (former soviet union)
5,200 / 8,800 1949 ("rds-1")
united kingdom
1601952 ("hurricane")
france
< 350 1960 ("gerboise bleue")
china
160-400 1964 ("596")
non-npt nuclear powers
india
100-140 1974 ("smiling buddha")
pakistan
-60 1998 ("chagai-1")
north korea
0-10 2006 (test at sangpyong-ri)
undeclared nuclear weapons states
israel
100-200 unknown or 1979 (soo vola incident)