‘Doomsday Clock’ warns of nuclear threats, wars, climate crisis and AI
The symbolic clock will remain set at the closest point to the symbolic hour of apocalpyse it has ever been since 1947.
New Strategic Arms Reduction Treaty (New START) 2011
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Nuclear diplomacy suffers major setback in Russia’s war on Ukraine
The total number of nuclear warheads fell worldwide, but the amount of operational nuclear weapons started to rise.
Russia to suspend role in last remaining nuclear accord with U.S.
Vladimir Putin said Russia will not withdraw from the treaty but will no longer allow NATO countries to inspect its nuclear arsenal, which is at the heart of the agreement.
U.S. says Russia is violating terms of the New START nuclear arms treaty
The United States says Russia won't allow American inspectors to inspect its arsenal to ensure compliance with the post-Cold War agreement the two nations renewed for five years in 2021.
U.S. open to New START talks with Russia after both 'prepared to meet'
The U.S. and Russia agreed to renew New START for another five years in February 2021, just before it was set to expire. The treaty was extended without changes, but the prospect of new talks chilled with Russia's invasion of Ukraine.
Geneva hosts U.S.-Russia security talks
Diplomats from the U.S. and Russia held a new round of discussions in Geneva seeking ways to defuse rising tensions and to avoid a new nuclear arms race.
Biden and Putin agree to reduce nuclear risks
With U.S.-Russia tensions nearing Cold War-era dimensions, Presidents Biden and Putin used Swiss diplomacy to agree to nuclear talks and other measures.
Open Skies lapse weakens U.S.-Russia ties
Russia withdrew from a treaty meant to lower the risk of conflict between Western nations and post-Soviet Russia, soon after the U.S. abandoned it.
U.S. and Russia renew New START Treaty
The Biden administration restored some stability to nonproliferation efforts by extending the last major U.S.-Russia nuclear treaty for another five years.
Biden favors renewal of U.S.-Russia nuke accord
U.S. President Joe Biden proposed seeking an extension to the last major U.S.-Russia nuclear accord, which the Trump administration decided to let lapse.
Russia to withdraw from Open Skies Treaty
Russia announced plans to withdraw from the Open Skies Treaty, two months after U.S. President Donald Trump's administration abandoned it.
Trump dismisses Putin's New START offer
Russian President Vladimir Putin offered to extend the New START treaty as is, but U.S. President Donald Trump's administration called it a "non-starter."
Trump pushes New START before election
U.S. President Donald Trump appeared to be pushing for a foreign policy win before Election Day, seeking to renew a nuclear arms control deal with Russia.
Nationalism rejected on 75th A-bomb anniversary
On the 75th anniversary of the first atomic bombing, Hiroshima's mayor called on world leaders to ban atomic weapons and boost international cooperation.
U.S.-Russia nuclear weapons talks restart
U.S.-Russia nuclear talks resumed after more than a year, despite unknown factors like China's non-participation and a U.S. presidential election.
Trump to pull U.S. from surveillance treaty
The United States announced it is withdrawing from a treaty that permits mutual unarmed surveillance flights over 34 nations.