In the wake of three decades of dormancy, nuclear weapons testing has resurfaced as a prominent global issue. Recent events include Russia’s trial of a nuclear-powered missile without detonating an actual bomb, prompting President Donald Trump to declare the U.S. will resume nuclear testing. Notably, North Korea stands as the sole country to have conducted nuclear tests in the 21st century, all of which were carried out underground. The U.S. last tested a nuclear bomb in 1992, while Russia and China conducted their last tests in 1990 and 1996, respectively.
Historically, the most striking nuclear tests occurred openly in the late 1940s and 1950s, showcasing some of the most iconic and alarming images of the nuclear era. The enduring consequences of these tests are still evident today. For instance, the U.S. trials at Bikini Atoll in the Pacific remain among the largest ever, rendering the area uninhabitable due to lingering radioactive contamination.
Most atmospheric testing ceased in 1963 with the signing of the Partial Test Ban Treaty by the U.S., Soviet Union, and others. Although lacking specific mechanisms for enforcement, the agreement successfully curtailed testing activities. Despite continued underground testing by major powers throughout the 1980s, a growing movement emerged to bring an end to the practice.
In 1992, the U.S. imposed a moratorium on testing, followed by the adoption of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) in 1996 by the United Nations, prohibiting all nuclear test explosions in any environment. The treaty introduced a global monitoring system to detect such tests worldwide, ensuring transparency and compliance. However, the CTBT has not been fully implemented due to insufficient ratification by major nuclear powers and other states.
While Russia and China have refrained from large-scale nuclear explosions in recent years, concerns persist that they may have conducted smaller tests violating the moratorium. Despite calls in 2023 by a Russian advisor to annually test nuclear weapons to deter Western powers, no evidence suggests such actions have occurred.
Recent developments, including Russia’s trials of a nuclear-powered missile and an underwater drone capable of delivering a nuclear strike on coastal cities, have reignited discussions on nuclear testing. President Trump’s announcement of a potential resumption of nuclear testing contrasts with his previous intentions to negotiate reductions in the nuclear threat with Russia and China.
In summary, the resurgence of nuclear testing, particularly in light of recent events, underscores ongoing global concerns regarding nuclear proliferation and security threats.