April 2024
By Shizuka Kuramitsu and Daryl G. Kimball

Japan chaired a rare, high-level UN Security Council meeting on nuclear disarmament and nonproliferation on March 18. Although the meeting underscored the urgency of addressing the growing threats posed by nuclear weapons, it also highlighted the chronic divisions among key states on disarmament and nonproliferation issues.

Japanese Foreign Minister Yoko Kamikawa described the meeting as “an opportunity for UN member states to share concrete ideas and proposals to accelerate the realization of a world without nuclear weapons” in an op-ed published by PassBlue on March 17.

“The world now stands on the cusp of reversing decades of declines in nuclear stockpiles. We will not stop moving ahead to promote realistic and practical efforts to create a world without nuclear weapons. Japan cannot accept Russia’s threats to break the world’s 78-year record of the nonuse of nuclear weapons,” she added.

UN Secretary-General António Guterres; Robert Floyd, executive secretary of the Preparatory Commission of the Comprehensive Nuclear-Test-Ban Treaty Organization; and Gaukhar Mukhatzhanova, director of the nonproliferation program at the Vienna Center for Disarmament and Non-Proliferation, were invited to brief the meeting.

All Security Council members were represented, including the five permanent members (China, France, Russia, the United Kingdom, and the United States). Many stressed the urgency of addressing growing nuclear weapons threats. But the exchange also underscored the extent to which rising geopolitical tensions and long-standing divisions among leading states impede tangible progress on disarmament and nonproliferation issues.

In his opening remarks, Guterres warned that “[h]umanity cannot survive a sequel to [the movie] Oppenheimer. Voice after voice, alarm after alarm, survivor after survivor are calling the world back from the brink.”

“And what is the response?” he asked. “States possessing nuclear weapons are absent from the table of dialogue. Investments in the tools of war are outstripping investments in the tools of peace. Arms budgets are growing, while diplomacy and development budgets are shrinking.”

Guterres said the nuclear-armed states in particular “must reengage” to prevent any use of a nuclear weapon, including by securing a no-first-use agreement, stopping nuclear saber-rattling, and reaffirming moratoriums on nuclear testing.

He urged them to take action on prior disarmament commitments under the nuclear Nonproliferation Treaty (NPT), including reductions in the number of nuclear weapons “led by the holders of the largest nuclear arsenals, the United States and the Russian Federation, who must find a way back to the negotiating table to fully implement the [New Strategic Arms Reduction Treaty] and agree on its successor.”

To catalyze action, he reiterated his call for “reforms to disarmament bodies, including the Conference on Disarmament [CD]…that could lead to a long-overdue fourth special session of the General Assembly devoted to disarmament.”

U.S. Ambassador Linda Thomas-Greenfield criticized Russia’s “irresponsible…nuclear rhetoric” and said that “China has rapidly and opaquely built up and diversified” its nuclear arsenal.

In addition, “Russia and China have remained unwilling to engage in substantive discussions around arms control and risk reduction,” she said.

Thomas-Greenfield reiterated the U.S. offer to “engage in bilateral arms control discussions with Russia and China, right now, without preconditions.”

Dmitry Polyanskiy, Russia’s deputy UN ambassador, said that his country shares “the noble goal” of a nuclear-weapon-free world. Nevertheless, he described the possession of nuclear weapons as “an important factor in maintaining the strategic balance.”

Polyanskiy countered criticism of Russian nuclear threats by charging that it is the “clearly Russophobic line of the United States and its allies [that] creates risks of escalation that threaten to trigger a direct military confrontation among nuclear powers.” He said the current situation is largely the result of the “years-long policy of the United States and its allies aimed at undermining the international architecture of arms control, disarmament, and [weapons of mass destruction] nonproliferation.”

Polyanskiy added, “As for the issues of strategic dialogue between Russia and the United States with a view to new agreements on nuclear arms control, they cannot be isolated from the general military-political context. We see no basis for such work in the context of Western countries’ attempts to inflict a ‘strategic defeat’ on Russia and their refusal to respect our vital interests.”

Maltese Ambassador Vanessa Frazier called on the nuclear-weapon states to fulfill their disarmament obligations under the NPT. “Current tensions cannot be an excuse for the delay…. Rather they should be a reason to accelerate the implementation,” she said.

Chinese Ambassador Zhang Jun acknowledged that “the risk of a nuclear arms race and a nuclear conflict is rising” and “[t]he road to nuclear disarmament remains long and arduous.”

He reiterated Beijing’s long-standing position that “nuclear weapons states should explore feasible measures to reduce strategic risks, negotiate and conclude a treaty on no first use of nuclear weapons against each other” and “provide legally binding negative security assurances to non-nuclear-weapon states.”

Apparently in response to U.S. criticism of a Chinese nuclear buildup and refusal to engage in substantive arms control and risk reduction talks, Zhang said these “allegations against China do not hold any water.”

“Demanding that countries with vastly different nuclear policies and number of nuclear weapons should assume the same level of nuclear disarmament and nuclear transparency obligations is not consistent with the logic of history and reality, nor is it in line with international consensus, and as such will only lead international nuclear disarmament to a dead end,” the Chinese envoy said.

Some states proposed new initiatives. In response to U.S. concerns that Russia may be pursuing an orbiting anti-satellite system involving a nuclear explosive device, Japan and the United States announced they will “put forward a Security Council resolution, reaffirming the fundamental obligations that parties have under this [Outer Space] Treaty,” which prohibits the deployment of weapons in space. (See ACT, March 2024.)

Japan also announced the establishment of a cross-regional group called Friends of FMCT “with the aim to maintain and enhance political attention” and to expand support for negotiating a fissile material cutoff treaty (FMCT) banning the production of fissile materials for nuclear weapons.

For decades, the 65-nation CD has failed to agree on a path to begin FMCT talks. Australia, Brazil, Canada, France, Germany, Italy, the Netherlands, Nigeria, the Philippines, the UK, and the United States will join the FMCT group, according to the Japanese Foreign Ministry.

High-level Security Council debates focused on nuclear disarmament and nonproliferation have been infrequent in the post-Cold War era, and few of them result in consensus statements or resolutions.

In 2009, the council held a summit-level meeting chaired by U.S. President Barack Obama on nuclear nonproliferation
and disarmament.

It adopted Resolution 1887, which reaffirmed a “commitment to the goal of a world free of nuclear weapons” and outlined a framework of measures for reducing global nuclear dangers.

In September 2016, the council adopted Resolution 2310, which reaffirmed support for the 1996 Comprehensive Test Ban Treaty. It called on states to refrain from resuming nuclear testing and called on states that have not signed or ratified the treaty to do so without further delay.

More recently, the council has held briefings on nuclear disarmament issues but without tangible outcomes.

The last such meetings were in March 2023, when Mozambique chaired a discussion on threats to international peace and security, including nuclear dangers, and in August 2022, when China organized a meeting on promoting common security through dialogue in the context of escalating tensions among major nuclear powers.

Following the March 18 meeting, the Japanese Foreign Ministry said the session “provided an opportunity to accelerate substantive discussion between nuclear-weapon states and non-nuclear-weapon states” ahead of the NPT review conference in 2026.

April 2024
By Kelsey Davenport

European and U.S. officials threatened to pursue action against Iran at the next International Atomic Energy Agency (IAEA) Board of Governors meeting if Tehran does not meet its legally binding safeguards obligations.

The agency has been pressing Iran for years to account for the presence of nuclear materials at two sites that were never declared to the IAEA as part of Iran’s nuclear program. The agency assesses that one of the locations, Turquazabad, was used to store nuclear materials and equipment, and the other, Varamin, included a pilot plant for uranium milling and conversion.

In a Feb. 26 report, the IAEA said Iran did not provide the agency with “any information on the outstanding safeguards issues relevant to either of the two undeclared locations.” It added that the IAEA “will not be able to confirm the completeness and correctness” of Iran’s nuclear declaration until Tehran provides technically credible explanations for the presence of the uranium at the two locations and accounts for the current location of the nuclear materials.

France, Germany, and the United Kingdom, known as the E3, said in a March 7 statement to the IAEA board that action to “hold Iran accountable to its legal obligations is long overdue.” They made clear that they will pursue a resolution at the board’s quarterly meeting in June if there is no “decisive and substantive progress” on the safeguards investigation.

An official from one of the E3 countries told Arms Control Today in a March 12 email that several European countries favored pursuing a resolution censuring Iran for its failure to cooperate with the agency during the March board meeting, but the United States opposed the proposal.

The board last passed a resolution regarding the investigation in November 2022. That resolution said it is “essential and urgent” for Iran to clarify all outstanding safeguards issues. Following the passage of that resolution, Iran agreed in a March 2023 joint statement with the agency to “provide further information and access to address the outstanding safeguards issues.”

The E3 statement also said the board may need to consider “making a finding under Article 19 of Iran’s Safeguards Agreement,” which includes the option of reporting Iran to the UN Security Council if the agency cannot verify that all of Iran’s nuclear materials are being used for peaceful purposes.

The board reported Iran to the Security Council in 2006, a move that led to a series of council resolutions requiring Iran to halt certain nuclear activities and the imposition of sanctions when Tehran failed to implement those provisions.

Iran defended its cooperation with the IAEA in a March 5 note to the agency. The note said that Tehran has “done its utmost” to enable the IAEA to “effectively carry out verification activities.” It said that Iran has fulfilled all of its legal commitments, including under its safeguards agreement. The note repeated allegations that the IAEA assessment of the undeclared locations is “based on unreliable information and unauthentic documents.”

In a March 7 statement to the board, Laura Holgate, U.S. ambassador to the IAEA, also condemned Iran’s failure to cooperate with the IAEA investigation, but suggested that the board ask the agency to prepare a “comprehensive summary report” on Iran’s nuclear program and the “degree to which the agency is in position to verify that Iran’s program is exclusively peaceful.”

She said that if Iran continues to “delay and deflect” the agency’s inquiries, the board must consider “further action for the sake of demonstrating that no state can indefinitely thwart implementation of its…safeguards obligations [under the nuclear Nonproliferation Treaty] by obstructing” the IAEA.

If the board pursues a resolution censuring Iran for failing to cooperate with the agency, Tehran is likely to retaliate. The U.S. intelligence community, in its 2024 Worldwide Threat Assessment, released March 11, assessed that Iran “probably will consider installing more advanced centrifuges, further increasing its enriched uranium stockpile, or enriching uranium to 90 percent” uranium-235 in response to a censure, further sanctions, or an attack against the nuclear program.

The intelligence community also assessed that Iran “is not currently undertaking key nuclear weapons-development activities” but that the expansion of the country’s program “better position[s] it to produce a nuclear device, if it chooses to do so.”

According to the most recent IAEA report on Iran’s nuclear program, Iran’s overall stockpile of enriched uranium grew over the last quarter. But Tehran down-blended 32 kilograms of uranium enriched to 60 percent U-235 by mixing the material with low-enriched uranium. As a result, Iran’s stockpile of 60 percent U-235 material decreased slightly from 128 kilograms to 121 kilograms.

Although a slight decrease in the stockpile of 60 percent U-235 is positive because that material can be quickly enriched to weapons-grade levels, or 90 percent U-235, the down-blending has little impact on the immediate proliferation risk posed by Iran’s nuclear program.

If Iran made the decision to produce weapons-grade uranium, it could still enrich enough material for one bomb in about a week and enough for about six bombs in a month. After that, it would take Iran an estimated six months to one year to build a bomb. But those activities would take place at covert facilities, making the weaponization process more difficult to detect and disrupt.

Holgate told the IAEA board that the United States has “serious concerns” about the 60 percent U-235 stockpile. “Iran should down-blend all, not just some, of its 60 percent stockpile, and stop all production of uranium enriched to 60 percent entirely,” she said.

April 2024
By Xiaodon Liang

The U.S. intelligence community remains concerned that Russian President Vladimir Putin could resort to the use of nuclear weapons in Ukraine in response to Russia’s failure to achieve decisive battlefield successes, Director of National Intelligence Avril Haines told the Senate Select Committee on Intelligence on March 11.

After Putin made several veiled nuclear threats in the spring and fall of 2022, U.S. intelligence officials made public an assessment that senior Russian officials had discussed the use of tactical nuclear weapons in Ukraine that year. (See ACT, December 2022.)

Haines, presenting the 2024 edition of the worldwide threat assessment report, also said that the intelligence community worries that Russia will put at risk long-standing norms against the use of “asymmetric or strategically destabilizing weapons, including in space and the cyber domain.”

In February, U.S. officials accused Russia of developing a new anti-satellite (ASAT) weapons system that would violate the Outer Space Treaty. (See ACT, March 2024.) The accusation of a treaty violation strongly implies that the new ASAT system would carry a nuclear warhead in orbit.

The report said that Russian capabilities in space would remain competitive with those of the United States despite the imposition of sanctions on the Russian space industry in response to the invasion of Ukraine. In contrast, last year’s report speculated that sanctions, in concert with resource constraints and sectoral difficulties, might imperil Russia’s long-term space goals.

The intelligence community assesses that North Korea, having supplied Russia beginning last year with conventional arms and munitions to bolster the war effort in Ukraine (see ACT, November 2023), is probably seeking to leverage this assistance to secure acceptance as a nuclear power. Speaking to this concern, Haines said that Russia’s reliance on its few allies may lead to weakening of “long-held nonproliferation norms.” North Korea’s shipment of military goods to Russia constitutes a violation of UN Security Council sanctions prohibiting exports of arms from North Korea.

Although the threat assessment did not include new information on Chinese strategic systems, it did eliminate a finding present in last year’s report that China was not interested in agreements that could restrict its strategic forces. This comes after a November summit between U.S. President Joe Biden and Chinese President Xi Jinping, two subsequent military-to-military meetings over the winter, and a January meeting in Bangkok between U.S. National Security Advisor Jake Sullivan and Chinese Foreign Minister Wang Yi. (See ACT, March 2024.)

In its assessment of Iran’s nuclear program, the report said the intelligence community found that the country is not currently performing key weapons-related activities.

In a shift from last year’s threat assessment, the report placed special emphasis on chemical and biological threats.

It highlighted the growing risk of states using chemical weapons against their own general population and individual critics. In addition to outlining the threat posed by actors employing dual-use biotechnologies to design new pathogens and toxins, the report noted the success that China and Russia have had in undermining public trust in countermeasures.