Moscow has reacted furiously to a decision by US President Joe Biden to change policy on Ukraine and allow Kyiv to use US-supplied long-range missiles to strike Russian territory for the first time.

The new doctrine outlines that Russia will consider using nuclear weapons against a non-nuclear state if they are supported by nuclear powers.

France’s President Emmanuel Macron says that France would shut down 14 of the country's 58 nuclear reactors currently in operation by 2035, of which between four and six will be closed by 2030.

India today successfully test-fires its indigenously-developed nuclear-capable long-range ballistic missile Agni-5, from an island in the Bay of Bengal.

President Vladimir Putin unveils an array of new nuclear weapons, in one of his most bellicose speeches in years, saying they could hit almost any point in the world and not be intercepted.

President Donald Trump arrives in South Korea on Tuesday, beginning a two-day visit centered on pressuring the nation’s neighbor to the north to abandon its nuclear weapons program.

During his presidential campaign, Donald Trump repeatedly declared that the Iran nuclear deal, known as “Joint Comprehensive Plan of Action” (JCPOA), was the worst agreement the US has ever signed, and his first priority as president would be to “tear up” the deal. JCPOA has limited Iran's nuclear programme in exchange for removal of all sanctions imposed by the West and the United Nations.

The leader of North Korea has said the country will not use nuclear weapons unless its sovereignty is threatened.

Kim Jong-un says North Korea's nuclear weapons should be ready for use "at any time", state media report.

Scientists are set to announce today whether the civilization is any closer or farther from disaster based on a "Doomsday Clock" that measures the likelihood of a global catastrophe.

U.S. President Barack Obama urges Pakistan to avoid developments in its nuclear weapons programme that could increase risks and instability.

North Korea says its main nuclear facility, Yongbyon complex, is now in "full operation".

Row between US and Benjamin Netanyahu deepens, with the Israeli leader accusing America and others of "giving up" on trying to stop Iran obtaining nuclear weapons