President Donald Trump raised questions Wednesday evening a few decades-old U.S. prohibition on testing its nuclear weapons by detonating them, a prospect which specialists say is harmful to populations and would open a door for adversaries to check and sharpen their strongest weapons.
Minutes earlier than a gathering with Chinese language President Xi Jinping, Trump posted on his social media platform that he “instructed the Division of Warfare to start out testing our Nuclear Weapons on an equal foundation.”
“That course of will start instantly,” the president added.
Decoding the president on social media
The White Home wouldn’t make clear whether or not Trump referred to explosive testing of nuclear weapons — which solely North Korea has undertaken within the twenty first century — or to the testing of platforms that would ship a nuclear weapon, which is routine.
President Donald Trump and Chinese language President Xi Jinping pose for photograph earlier than their U.S.-Chia summit assembly at Gimhae Worldwide Airport in Busan, South Korea, Oct. 30, 2025.
Mark Schiefelbein/AP
Vice President JD Vance, requested Thursday about what Trump meant, mentioned the president’s social media publish “speaks for itself.”
“We now have an enormous arsenal … Typically you have to check it to guarantee that it is functioning and dealing correctly,” Vance mentioned.
Vice Adm. Richard Correll, in his affirmation listening to Thursday to be commander of U.S. Strategic Command that oversees the fight deployment of nuclear weapons, emphasised the president’s reference to testing on an “equal foundation.”
“I wouldn’t presume the president’s phrases meant nuclear testing,” Correll mentioned, pointing to the president’s reference to testing on an “equal foundation.”
“Neither China nor Russia has carried out a nuclear explosive check. So I am not studying something into it or studying something out,” he mentioned, implying that the U.S. wouldn’t look to thaw a 30-year freeze on the nuclear check explosions.
Pressed by ABC Information concerning the publish, nevertheless, the White Home would solely say it was “doubtlessly” the case that Trump was referring to testing that matches inside present norms.

A sub-surface atomic check is proven March 23, 1955 on the Nevada Check Website close to Yucca Flats, Nev.
U.S. Atomic Power Fee by way of AP, FILE
Nuclear management consensus “at an inflection level”
The U.S. final examined a nuclear weapon in 1992 earlier than President George H.W. Bush signed a ban on nuclear testing — together with underneath the bottom. The U.S. and Russia are each signatories to the Complete Nuclear-Check Ban Treaty of 1996, which banned all check explosions.
However the treaty is just not in pressure as a result of it didn’t collect sufficient nations to ratify it, together with the U.S. and Russia. Nonetheless, a rejection of nuclear explosives has taken maintain as a norm.
Specialists say the U.S. has labored as part of a worldwide consensus combatting the proliferation of nuclear weapons — a key pillar of which is a dedication to not explode nuclear weapons as part of testing.
“The nonproliferation regime is at an inflection level,” mentioned Kelsey Davenport, director for nonproliferation coverage on the Arms Management Affiliation.
“If any state assessments at this level, it may open the door for different nations to see a path ahead to growing a viable nuclear deterrent, notably if a state that assessments [has] signed the Complete Nuclear Check Ban Treaty,” she mentioned.
That “would undercut the long-held norm towards nuclear testing that has sure each state besides North Korea,” Davenport mentioned.

A 24-hour Yonhapnews TV broadcast at Yongsan Railway Station in Seoul exhibiting a information broadcast of a check launch of latest intercontinental ballistic missile (ICBM) “Hwasong-19” at an undisclosed place in North Korea. North Korea’s Korean Central Information Company (KCNA) mentioned, Nov. 1 , 2024, that it efficiently test-fired the brand new Hwasong-19 intercontinental ballistic missile (ICBM) the day before today, with its chief Kim Jong Un saying the nation has secured an “irreversible” standing of growing supply technique of nuclear weapons.
SOPA Photos/LightRocket by way of Getty Photos
Who wins if nuclear testing returns?
It wasn’t instantly clear what prompted Trump to sign a coverage activate nuclear testing. He lately known as Russian navy assessments of doubtless nuclear-capable arms “inappropriate,” noting aloud the situation of U.S. nuclear capabilities close to Russia.
In response to Trump’s newest remark, the Kremlin mentioned its workouts within the final week had been routine and warned that Russia would observe go well with if the U.S. resumed testing.
“That’s not a nuclear check in any means,” mentioned Dmitry Peskov, spokesperson for Russian President Vladimir Putin who has more and more rattled the nuclear saber since Russia invaded Ukraine.
“If somebody deviates from the moratorium, Russia will act accordingly,” Peskov mentioned.
If the U.S. “opens the door to nuclear testing,” Davenport mentioned Russia and China would have “extra alternatives to check and refine these warhead designs.”
“The computing energy of the U.S. Nationwide Labs actually provides the USA an edge right here, however resuming nuclear testing may permit states like Russia and China to meet up with the USA,” she added.
Sen. Jack Reed, the highest Democrat on the Armed Providers Committee, mentioned on Capitol Hill Thursday he would take the president’s feedback “at face worth” to imply “nuclear explosive testing.”
Reed famous that the U.S. carried out over a thousand nuclear assessments within the Chilly Warfare period — lots of greater than Russia and dwarfing China’s 47 complete assessments. These a long time of testing yielded “subtle modeling codes” that permit the U.S. to take care of its capabilities and check them by way of supercomputers.
The worldwide moratorium on testing “locked in a technical benefit for the USA,” Davenport mentioned. “And that is one of many explanation why it might be silly for Trump to reopen the door to nuclear testing, as a result of it may permit different states to catch up.”
