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Russian President Vladimir Putin. Photo: Valya Egorshin/NurPhoto via Getty Images

The U.S. believes Russia has likely violated a ban on testing low-yield nuclear missiles, Defense Intelligence Agency director Lt. Gen. Robert Ashley told the Hudson Institute think tank in a speech in Washington, D.C., Wednesday.

"The United States believes that Russia probably is not adhering to its nuclear testing moratorium in a manner consistent with the 'zero yield' standard. ... Our understanding of nuclear weapon development leads us to believe that Russia's testing activities would help it improve its nuclear weapons capabilities."

Details: Ashley said Russia was likely testing weapons in the Novaya Zemlya islands, an archipelago in the Arctic Ocean in northern Russia. He believes it intends to increase its nuclear arsenal "significantly" over the next decade.

Why it matters: This is the first time the U.S. has suggested Russia might have effectively violated its commitments under the 1996 Comprehensive Nuclear Test Ban Treaty.

  • It's a critical time for U.S.-Russian relations. The Trump administration announced in February it would withdraw from the Cold-War era Intermediate-Range Nuclear Forces Treaty, due to formally end in August. The Pentagon plans to then begin testing missiles banned under the treaty.

The big picture: Russia has said it complies with the treaty, which it ratified in 2008. The U.S. has signed the treaty but not ratified it.

What they're saying: The Comprehensive Nuclear Test Ban Treaty Organization, which bans nuclear weapons testing, said in a statement it hadn't detected any unusual activity, per the BBC.

Go deeper: How Russia's old threat became new again

Go deeper

Updated 6 hours ago - Politics & Policy

U.S. sounds alarm on Ukraine

Conscripts line up at a Russian railway station yesterday before departing for Army service. Photo: Sergei Malgavko/TASS via Getty Images

The Biden administration is "deeply concerned" by new intelligence — detailed for Axios and other outlets — showing Russia stepping up preparations to invade Ukraine as soon as early 2022.

Why it matters: Most of this was known from public sources and satellite imagery, but the administration is sending a stronger signal by releasing specific details from the intelligence community.

CNN fires Chris Cuomo

Photo: Kevin Mazur/Getty Images for CNN

CNN said Saturday evening it has fired one of its star anchors, Chris Cuomo, following new revelations from a legal review made by the company into Cuomo's involvement in the management of his brother's sexual harassment scandal.

Why it matters: Saturday's firing speaks to how much pressure CNN was under by employees and critics to address Cuomo's behavior.

Updated 9 hours ago - Energy & Environment

Electric car prices could go up before they come down

Illustration: Eniola Odetunde/Axios

The secret to affordable electric vehicles is cheaper batteries. But after years of falling prices, battery costs are now headed in the wrong direction.

Why it matters: Costlier batteries could drive up the price of electric vehicles — threatening the auto industry's transition away from fossil fuels, and, in turn, society's fight against climate change.