Vladimir Putin

A damaged statue of the founder of the Soviet Union, Vladimir Lenin, in the Ukrainian-controlled Russian town of Sudzha, Kursk region, on August 16. (Photo by Yan DOBRONOSOV/AFP via Getty Images)

The Battle of Kursk probably won’t result in nuclear weapons use against Ukraine. But Russian escalation vis-à-vis NATO can’t be ruled out.

By Nikolai N. Sokov | Nuclear Risk, Nuclear Weapons

A photo shared on Russian opposition leader Alexey Navalny's instagram account shows Alexey Navalny on a hospital bed surrounded by his wife and two children as his treatment continues at Charite Hospital in Berlin, Germany on September 15, 2020. Navalny was poisoned, German doctors from a clinic where he is being treated announced. (Photo by Alexey Navalny Instagram Account /Handout/Anadolu Agency via Getty Images)

Putin critic Alexei Nevalny, who once survived a chemical weapons attack, dies in a Russian prison

By Matt Field | Biosecurity

Members of the Wagner Group look from a military vehicle with the sign "Brother" in Rostov-on-Don late on Saturday. (Photo by Roman Romokhov/AFP via Getty Images)

What would happen if a military group took over Russia’s nuclear arsenal?

By François Diaz-Maurin | Nuclear Weapons

The US and Russia must re-assess their strategic relations in a world without New START

By Steven Pifer | Nuclear Weapons

Three ways the US should respond to Russia’s suspension of New START

By Steven Pifer | Nuclear Weapons

Legal aspects of Russia’s New START suspension provide opportunities for US policy makers

By Rose Gottemoeller, Marshall L. Brown, Jr. | Nuclear Weapons

The A1 Verse: Kremlin TV dinner

By Thomas Gaulkin | Special Topics

Heavy equipment in a quarry.

The war in Ukraine is hurting the transition to low-carbon technologies

By Paul Hockenos | Climate Change

VIDEO – Zelensky’s journey: A standup comic stands up to Putin

By Thomas Gaulkin | Multimedia, Special Topics

VIDEO: Which war crimes might Russians have committed in Ukraine?

By Thomas Gaulkin | Special Topics

A picture of Putin.

Europe’s ‘darkest hour,’ war in a radioactive zone, and fleeing citizens: Putin invades Ukraine

By Matt Field | Analysis

President Joe Biden announces sanctions after Russia moves troops to Ukraine.

Biden announces new sanctions, moves troops to Baltics. Will Putin order Russian troops further into Ukraine?

By Matt Field | Analysis