The erosion of Iran’s position comes as the U.S. Navy and Gulf oil producers have become better at fending off or evading Iranian attacks, allowing more tankers to cross the strait.

The discussions have occurred on the sidelines of multilateral meetings in Geneva, New York and Casablanca, Morocco.

Efforts to verify constraints on artificial intelligence can benefit from the long, difficult story of nuclear weapons verification.

President Trump should demand that North Korea freeze, not eliminate, its nuclear weapons program, President Lee Jae Myung said in an interview.

Secretary of State Marco Rubio said that U.S. negotiators had restarted conversations about Iran’s nuclear program, but that there were no breakthroughs.

The Defense Department has obligated approximately $11.2 billion for operational costs associated with Operation Epic Fury and estimates it will need another $32.4 billion to replenish expended muniti...

When Xi Jinping visits the White House on Sept. 24, it’s uncertain whether he and Trump will discuss nuclear weapons — but they should.

In a meeting on Sunday, the U.S. Treasury secretary and China’s vice premier talked about having a shared vision on the goals of artificial intelligence and the threats it poses.

"The United States and China aren’t ready to slow down but they still have plenty to talk about," write Julian Gewritz and Matt Sheehan.

A strike on a train that imperiled former European leaders and CIA officers is among a spate of attacks that risked a dangerous escalation with the West, experts say.

The Golden Dome air and missile defense program's first phase focuses on deterring a strike aimed at killing U.S. leadership and a limited attack by a rogue nation against the homeland.

Nine countries now possess nuclear weapons. Arms control agreements painstakingly built over decades have collapsed. Geopolitical competition is

Why Washington still risks losing the tech race.

Golden Dome for America will use artificial intelligence to compress homeland defense decisions from human to machine speed while allowing commanders to increase the degree of automation as an attack ...

Golden Dome planners are designing the $185 billion homeland missile defense system around how adversaries are expected to attack and what they are likely to target -- offering new insight into how th...

Decades of hard-won mediation experience point the way.

Explore the implications of the New START expiration on nuclear forces and the future of nuclear arms control.

President Trump has been at the forefront of the “what-me-worry?” crowd, refusing to engage on how to balance the risks and rewards of A.I.

The U.S. had to expend 70 or more Patriots and Thaads to blunt an attack on Jordan.

The U.S. has very few options right now to protect the homeland against 21st-century missile attacks, a key senator said Monday.

Trump has already undermined NATO and allied deterrence.

Russian and Chinese advances led to the revelation, Gen. Douglas Schiess says at AFA.

NATIONAL HARBOR, Md.--The ground support segment for the future LGM-35A intercontinental ballistic missile by Northrop Grumman "has really turned the

NATIONAL HARBOR, Md. – A Senate Armed Services panel chair today said boosters of the Golden Dome program still have work to do to increase support on

For decades, the United States’ nuclear weapons enterprise has wrestled with an institutional paradox. On one hand is the imperative to make the complex

The Air Force and Northrop Grumman on Monday said they recently completed a full assembly of the LGM-35A Sentinel future intercontinental ballistic

Experts said the acknowledgment may lead to overt action by China, Russia.

Even as Beijing urges the United States not to hype the dangers of A.I., its own spy chief is framing the technology as a threat to the Communist Party’s security.

Six months after the United States launched the war on Iran and four months after beginning a naval blockade of the Strait of Hormuz, commercial shipping remains choked, while combat operations have e...

The Space Force has tallied an $11.6 billion price tag for its Evolved Strategic SATCOM space development and production program, a Boeing-led project to develop and buy seven satellites that will rep...

The Pentagon seeks congressional authority to shift nearly $1.5 billion in funding toward emerging priorities, including a major expansion of artificial intelligence capabilities and changing requirem...

A new strategy aims to prepare to “deploy, fight, and win decisively in a bio-contested environment” by 2035.

NNSA announced today that the Y-12 National Security Complex has completed production of the B61-13 Canned Subassemblies (CSAs) required to support the last production unit needs for the B61-13 progra...

In a new report, the A.I. start-up added that it could not determine whether the research was legitimate or nefarious, leading the company to shut down the work.

Nearly a year into his tenure leading the National Nuclear Security Administration, Brandon Williams says some of his most difficult decisions have

Allowing Saudi Arabia to enrich uranium to such levels risks bolstering congressional opposition to the deal.

How to head off a new arms competition.

A drone carrying an explosive device was discovered at the airport close to Ukrainian cargo planes on 4 August.

The war has deteriorated over the past six months into Mr. Trump’s own version of a “forever war,” with no clear goals and no end in sight.

‘We hope to see more from countries like the United Kingdom,’ says Pentagon policy chief

South Korea, U.S. Stall on Uranium Enrichment Talks Experts urge South Korea to frame enrichment as joint effort to replace Russian supply chains

Pentagon leaders are declaring a string of unusually rapid test successes for Golden Dome for America -- including what the program's director calls the most complex integrated missile defense test th...

The Trump administration sent the nuclear cooperation agreement it had signed with Saudi Arabia to Congress on Monday, an administration official and multiple congressional aides told CNN.

While there has been criticism among missile defense advocates of Golden Dome's development pace after the signing of an executive order in January last

Independent analysts have struggled to project a cost for the Pentagon's Golden Dome program due to secrecy around the architecture.

The administration is veering wildly in its response to the national security implications of A.I. as China, America’s main technological and military rival, charges ahead.

President Donald Trump’s war against Iran is stretching the limits of the nation’s aircraft carriers and leaving the western Pacific without one of the key American warships.

The Trump administration is doubling down on sanctions and a naval blockade, while Tehran bets high oil prices will force Washington to relent.