Nuclear tests are experiments conducted to evaluate the performance of nuclear weapons. These tests can be carried out underground, underwater, or in the atmosphere, and they help scientists understand the effects of nuclear explosions. Countries like the United States, Russia, and North Korea have conducted various nuclear tests over the years. The primary purpose of nuclear tests is to ensure the reliability and effectiveness of a nation’s nuclear arsenal. However, these tests often raise international concerns about nuclear proliferation and environmental impacts, leading to treaties like the Comprehensive Nuclear-Test-Ban Treaty aimed at banning all nuclear explosions.