Nukes are rare and badly important for two reasons. the first reason why they are rare is that a treaty requires countries that have nukes to not share the recipe and the countries that don't have nukes to not research into nukes. The other reason that Nukes are rare is that only 8 countries even have them and the materials and info required to make them is rare.
Nukes are dangerous and need to be destroyed for two reasons. The first reason that nukes need to be destroyed is that the bomb that dropped on Hiroshima called 'Little Boy' was as powerful as 16 thousand tons of explosives. The other reason why Nukes need to be destroyed is that Obama is the first president to go the Hiroshima and his visit to Hiroshima might boost nuclear disarmament
Japan was hurt very badly by the bombing of Hiroshima for two reasons, The first reason why Japan was hit hard is that the resources were scarce and people were only given one egg per year. The other reason Japan was hit so hard was that they didn't expect it and people would downright ignore air sirens.
Since world war two the nuke has impacted the world for two main reasons. the first reason is that Nukes have caused 260 thousand people unaccounted for with the confirmed death of over 130 thousand people. the other reason why Nukes have impacted the world is that countries are making more powerful nukes that can be 1 thousand times stronger than the original nuke Little Boy.