With the war in Ukraine still raging, a political analyst believes Russia is considering using tactical nuclear weapons, but the U.S. is ready to respond.
Russia has transported its nuclear weapons away from a storage facility in Belgorod as armed groups sympathetic to Ukraine sneaked into the Russian territory.
The U.S. once dreamed of detonating a nuclear bomb on the moon to intimidate the then-Soviet Union, according to a research paper by American scientists.
The United States publicly released data on its nuclear arsenal Monday and pressed Russia to do the same after Moscow said it was suspending participation in New START.
Iran accused the United States of procrastinating in efforts to revive Tehran's 2015 nuclear deal.
Israel has warned that Iran is now capable of producing five nuclear weapons after its nuclear program gained enough uranium-enriched material.
Israeli Prime Minister Benjamin Netanyahu is not confident that a nuclear deal could thwart Iran's ambition of becoming a military nuclear power.
The Ohio-class ballistic missile submarine will be deployed to South Korea as part of the Washington Declaration.
Former Russian president Dmitry Medvedev made the warning while speaking at an educational marathon conference in Moscow.
Former President Donald Trump warned that the world is inching closer to World War III while emphasizing the risk of nuclear weapon proliferation.
The U.S. military has conducted a test launch of the Minuteman III ballistic missile using an airborne control center to highlight its readiness.
China is on the cusp of becoming the third nuclear superpower after partnering with Russia to build reactors that could help produce atom bombs.
North Korean leader Kim Jong-Un and his 10-year-old daughter supervised the launch of the newest ICBM, which could cause "extreme uneasiness" to their rivals.
Former President Donald Trump expressed concern about countries' nuclear capability, saying nuclear weapons are the greatest problem facing the world.
A nuclear weapon watchdog group has expressed concern over North Korea's significant progress in producing nuclear weapons since 2017.
North Korea is not backing down on its threat of a nuclear attack over the recently-held joint military exercises conducted by the U.S. and South Korea.
Russian President Vladimir Putin threatened to respond if the U.K. arms Ukraine with tank shells containing depleted uranium.
Russian President Vladimir Putin appeared to have broken away from his joint statement with China, opposing the deployment of nuclear weapons beyond borders.
Lt. Gen. Scott Berrier believes North Korea's recent missile tests are part of Kim Jong-un's intention to make their nuclear force more accurate and lethal.
The International Atomic Energy Agency said Iran has achieved 83.7% purity for uranium particles, very close to weapons grade.
The former U.S. lieutenant general said Russians would unlikely use nuclear warheads as they know it "won't change things on the ground."
The former U.S. general said Russia would likely launch nuclear warheads to convince Ukraine that it could turn into a "nuclear holocaust."