Nuclear weapons take many resources to make, because the materials they are made of are very rare and it takes many scientists to make them. But several countries have managed to create nuclear weapons and many have them today. The countries that possess nuclear weapons are listed here in the order that they were invented: United States (1945), Russia (1949), United Kingdom (1952), France (1960), China (1964), India (1974), and Pakistan (1998). Other countries are believed to secretly have nuclear weapons or develop them. Some countries used to have nuclear weapons, but have since then said that they had gotten rid of their nuclear weapons. 