In 1963, President John F. Kennedy kicked off a decades-long effort to reduce the risk of nuclear war, when he signed the Limited Test Ban Treaty. Subsequent presidents forged new agreements, but now that global order to safeguard and reduce nuclear arms is deteriorating.

This month the last bilateral nuclear treaty between Russia and the United States expired. Meanwhile, President Trump is pushing the international order to a breaking point, and European leaders are speculating about a new path forward for their collective nuclear defense. 

NPR’s Mary Louise Kelly talks with Christine Wormuth, former Secretary of the Army and now President and C.E.O. of The Nuclear Threat Initiative, about the possibility of a new nuclear arms race.

For sponsor-free episodes of Consider This, sign up for Consider This+ via Apple Podcasts or at plus.npr.org.  Email us at considerthis@npr.org.

This episode was produced by Karen Zamora and Connor Donevan, with audio engineering by Ted Mebane. It was edited by Christopher Intagliata, Brett Neely and Courtney Dorning. Our executive producer is Sami Yenigun.

WASHINGTON (AP) — The United States will send the world’s largest aircraft carrier to the Middle East to back up another already there, a person familiar with the plans said Friday, putting more American firepower behind President Donald Trump’s efforts to coerce Iran into a deal over its nuclear program.

The USS Gerald R. Ford’s planned deployment to the Mideast comes after Trump only days earlier suggested another round of talks with the Iranians was at hand. Those negotiations didn’t materialize as one of Tehran’s top security officials visited Oman and Qatar this week and exchanged messages with the U.S. intermediaries.

Already, Gulf Arab nations have warned any attack could spiral into another regional conflict in a Mideast still reeling from the Israel-Hamas war in the Gaza Strip. Meanwhile, Iranians are beginning to hold 40-day mourning ceremonies for the thousands killed in Tehran’s bloody crackdown on nationwide protests last month, adding to the internal pressure faced by the sanctions-battered Islamic Republic.

The Ford’s deployment, first reported by The New York Times, will put two carriers and their accompanying warships in the region. Already, the USS Abraham Lincoln and its accompanying guided-missile destroyers are in the Arabian Sea.

The person who spoke to The Associated Press on the deployment did so on condition of anonymity to discuss military movements.

Ford had been part of Venezuela strike force

It marks a quick turnaround for the Ford, which Trump sent from the Mediterranean Sea to the Caribbean last October as the administration build up a huge military presence in the lead-up to the surprise raid last month that captured then-Venezuelan President Nicolás Maduro.

It also appears to be at odds with Trump’s national security strategy, which put an emphasis on the Western Hemisphere over other parts of the world.

Trump on Thursday warned Iran that failure to reach a deal with his administration would be “very traumatic.” Iran and the United States held indirect talks in Oman last week.

“I guess over the next month, something like that,” Trump said in response to a question about his timeline for striking a deal with Iran on its nuclear program. “It should happen quickly. They should agree very quickly.”

Trump told Axios earlier this week that he was considering sending a second carrier strike group to the Middle East.

Trump held lengthy talks with Israeli Prime Minister Benjamin Netanyahu on Wednesday and said he insisted to Israel’s leader that negotiations with Iran needed to continue. Netanyahu is urging the administration to press Tehran to scale back its ballistic missile program and end its support for militant groups such as Hamas and Hezbollah as part of any deal.

The USS Ford set out on deployment in late June 2025, which means the crew will have been deployed for eight months in two weeks time. While it is unclear how long the ship will remain in the Middle East, the move sets the crew up for an usually long deployment.

The White House didn’t immediately respond to a request for comment.

Ford’s deployment comes as Iran mourns

Iran at home faces still-simmering anger over its wide-ranging suppression of all dissent in the Islamic Republic. That rage may intensify in the coming days as families of the dead begin marking the traditional 40-day mourning for the loved ones. Already, online videos have shown mourners gathering in different parts of the country, holding portraits of their dead.

One video purported to show mourners at a graveyard in Iran’s Razavi Khorasan province, home to Mashhad, on Thursday. There, with a large portable speaker, people sang the patriotic song “Ey Iran,” which dates to 1940s Iran under the rule of Shah Mohammad Reza Pahlavi. While initially banned after the 1979 Islamic Revolution, Iran’s theocratic government has played it to drum up support.

“Oh Iran, a land of full of jewels, your soil is full of art,” they sang. “May evil wishes be far from you. May you live eternal. Oh enemy, if you are a piece of granite, I am iron.”

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Gambrell reported from Dubai, United Arab Emirates. Associated Press writer Aamer Madhani contributed to this report.