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.
Nuclear Security & WMD
News and insights on nuclear security policy and weapons of mass destruction (nuclear, chemical and biological weapons), amid threats and risks ranging from Russia's war in Ukraine to North Korea's missile tests.
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Nuclear weapons ban enters into force
Advocates of world peace celebrated "EntryIntoForceDay" as the first legally binding treaty to ban nuclear weapons finally became international law.
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.
Iran begins 20% uranium enrichment
Iran resumed enrichment of uranium to 20% in a move closer to weapons grade levels and further away from the 2015 nuclear deal.
U.N. nuclear treaty ban to enter into force
Fifty nations ratified a treaty to ban nuclear weapons that will enter into force in 90 days, the U.N. confirmed on the same day it was founded 75 years ago.
U.N. lets Iran arms ban lapse despite U.S. dissent
The signatories to the Iran nuclear deal allowed a U.N.-imposed embargo on arms trade with the nation and some travel bans to expire as planned.
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."
OPCW confirms nerve agent in Navalny attack
Germany and France pushed for E.U. sanctions on Russia after OPCW confirmed Russia's Alexei Navalny was poisoned with a Soviet-era nerve agent.
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.
U.S. unilaterally restores U.N. sanctions on Iran
The U.S. followed through on its threat to unilaterally restore sanctions against Iran, defying widespread international criticism.
IAEA chief negotiates nuclear access with Iran
Amid rising tensions on the U.N. Security Council over the 2015 Iran nuclear deal, IAEA and Tehran said Tehran will allow inspectors at two nuclear sites.
Security Council rejects U.S. demands on Iran
The U.N. Security Council rejected the Trump administration's attempt to use the 2015 Iran nuclear deal to restore international sanctions against Tehran.
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.
CTBTO urges no restart in nuclear testing
Members of the international watchdog monitoring nuclear testing warned any U.S. demonstration nuclear test explosion would mperil global security.