Who really has them

United States, perhaps as many as 9300 weapons.
Russia, perhaps as many as 9500 weapons.
Britain, 185 weapons.
France, 460 weapons.
Red China, 400 weapons. Taiwan is not pursuing atomics.
North Korea, has at least one, perhaps as many as six. Actively pursuing a multiplicity of strategies to annoy the United States, including a long range missile program. Still, their people eat grass.
South Africa had six bombs, supposedly all have been destroyed. Comfort level nearly 100%.
India, tested their first one in 1974. Has perhaps 30 weapons.
Pakistan, also tested one in May 1998. The stability of the Pakistani regime is a concern to everybody. They have perhaps 15 weapons.
Israel began a nuclear program in the mid 1950's, and certainly had nuclear weapons by 1966 or 1967. Why so many Arabs attacked a nuclear power is a mystery. The CIA estimates Israel to now possess between 75 and 130 nukes.
Ukraine has returned all 3000 of its tactical nukes from its territory to Russia. It is not clear if they possess other nuclear weapons. Comfort level 90%.
Kazakhstan had 1410 nukes, all of which were purportedly returned to Russia by 1995. Comfort level 85%.
Belarus. By November 1996, all nuclear weapons were returned to Russia. Comfort level 98%.
(while Cuba refused to sign the NPT, they do not have a weapon.)

Who's trying to get them

Saudi Arabia has expressed intention to obtain atomics.
Iran. They're trying really hard, but with limited success until quite recently. Has a functioning enrichment plant. They will have the bomb by 2005. Highly enriched uranium was found on inspected equipment by the AEA in mid-2003, which the Iranians claim was leftover from a previous owner.
Iraq taken out of the running by Gulf War II.
Brazil and Argentina were both trying to build nukes, but both seem to have stopped around 1992. Brazil has actually been researching atomic energy since the 1930's. Comfort level 99%.
Libya is not trying to build or acquire nukes. Comfort level 100%.
Japan is considered a paranuclear state, in that it could have a nuclear weapon ready in mere months.
Shoko Asahara, head of the Aum Shinrikyo cult, attempted to purchase nuclear weapons in the 1990's from ex-Soviet states.

"Israel began a nuclear program in the mid 1950's, and certainly had nuclear weapons by 1966 or 1967. Why so many Arabs attacked a nuclear power is a mystery. "?