Looking at this the countries that stand out ar Israel (on the q post sequence)
Pakistan,Ukraine and thoughts anons?
Since the NPT entered into force in 1970, three states that were not parties to the Treaty have conducted overt nuclear tests, namely India, Pakistan, and North Korea. North Korea had been a party to the NPT but withdrew in 2003.
Israel is also generally understood to have nuclear weapons,[2][3][4][5][6] but does not acknowledge it, maintaining a policy of deliberate ambiguity, and is not known definitively to have conducted a nuclear test.[7] Israel is estimated to possess somewhere between 75 and 400 nuclear warheads.[8][9] One possible motivation for nuclear ambiguity is deterrence with minimum political cost.[10][11]
States that formerly possessed nuclear weapons are South Africa (developed nuclear weapons but then disassembled its arsenal before joining the NPT)[12] and the former Soviet republics of Belarus, Kazakhstan, and Ukraine, whose weapons were repatriated to Russia.
https://en.m.wikipedia.org/wiki/List_of_states_with_nuclear_weapons