Brazil, Argentina, South Africa etc continue their nuke programs. During the fall of the Soviet Union, a small group of generals decides they want to retire well. Tactical nukes suddenly show up in Serbia, Iraq, Syria, Libya, Cuba, and Sudan. After a nuke shows up in Serbia and goes off in Croatia, everyone decides tactical nukes arent a big deal and game on. Chavez comes to power and promptly gets a nuke from Cuba in exchange for oil. Zimbabe, seeing South Africa, obtains a few nukes of its own. Saudi Arabia, UAE, Kuwait, Turkey, and Egypt all obtain nukes in response to Iraq. Greece starts a nuke program in response to Turkey. Bulgaria and Romania decide the neighborhood isnt too safe without one. Bin Laden spends a lot of money and Afghanistan obtains one - cuz they are virtually everywhere now.
Excuse me while I go take a sedative so I can sleep well tonight.