A senior defense official said maintaining deterrence remains the utmost priority of the U.S. and its allies as China moves to upgrade its nuclear arsenal.
A retired U.S. brigadier general said the West is incapable of deterring Russian President Vladimir Putin's possible use of nuclear weapons in Ukraine.
A British lawmaker offered a grim assessment of the likelihood of Russia using nuclear weapons against Ukraine.
Secretary of State Antony Blinken said the U.S. will continue to pursue diplomacy to prevent Iran from acquiring nuclear weapons.
Ukrainian President Volodymyr Zelensky said Russian President Vladimir Putin is resorting to threats of using nuclear weapons due to fears of losing the war.
Analysts believe Taiwan would benefit from joining the U.S. nuclear umbrella despite the grim possibility of a nuclear war with China.
Russia on Saturday dismissed criticism from U.S. President Joe Biden over Moscow's plan to deploy tactical nuclear weapons in Belarus, saying Washington had for decades deployed just such nuclear weapons in Europe.
Israel's military chief has sounded alarm over Iran's continued uranium enrichment in its nuclear program, vowing to take military action to stop it.
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.