Why America starts shouting if Some country tests nuclear weapon?

Nuclear weapons, When set off. Do not just destroy the land or area where it was let off. The Radiation from a Single Nuke Travels around the world and increases Cancer Risks for everyone world wide... Enough nukes go off it will destroy the entire world.. Do we really want to do this? ... Do we want to kill off everything and ourselves? ... Even if I was not American, I'd still be crying No Nuclear Weapons! War is bad enough already with the weapons being used. I wish we would focus on money and resources into healing eachother, healing the earth, improving the life of all nations and cultures, and not into building weapons of any type. - DNatureofDTrain

they dont want other people involve in nuclear other then them

Because countries have been know to escalate into war quickly with a nuclear weapon you put all on earth in danger

To resolve this you and me need to focus on our work, If we focus on others work, get the fruit from other's work by managing,supervising,controling,coordinating all activities of the world, not knowing the work of our own family members. What will happen ?? I should promise not to take the fruit of other's work. I should accept the result of my work. Thanks

maybe they want to control the world

Because if you test nuclear wepons you will start to threaten him thats why,they wanted the single country to conqure the world thy dont want others to compete with them.