JNS.org – As Iran’s regional proxies continue to weaken, and with Tehran mere weeks away from enriching uranium to weapons-grade level, there is more and more focus on the Islamic Republic’s nuclear activities, although there is no public evidence that it has decided to break out to a bomb.

Sima Shine, director of the Iran and the Shi’ite Axis Research Program at the Tel Aviv-based Institute for National Security Studies, highlighted the alarming progress, telling JNS that it was important to distinguish between Iran’s fissile material and the actual work of building a nuclear bomb.

“Regarding fissile material, they are very, very close. Within two to three weeks, they can enrich enough for three nuclear devices, and after that, for three more within a few weeks,” she said.

The next stage, she said, would be to create sufficient missile material at the 90% enrichment level and upwards.

The next step, Shine explained, would be to create a nuclear warhead, which would take more time, though she noted Iran could also decide to just create a bomb without a missile warhead. “We’re talking about roughly six months to a year and a half,” she said. “What is needed is a political decision” on Tehran’s part.

Regarding such a decision, Shine noted that there has been chatter in recent months within Iran—not necessarily from senior regime leaders but rather former senior members—about the need to modify Iran’s security and nuclear doctrine, while other voices have argued the opposite. “There is a very discernable dialogue about this,” said Shine.

Ultimately, the decision rests with Supreme Leader Ayatollah Ali Khamenei, she said, adding that Iran cannot be sure that any decision to break through would not result in an attack on its atomic facilities. Still, the possibility of an Iranian nuclear breakout due to events of the war raging between Israel and Iran’s proxies, their weakening, and the Iranian direct attacks on Israel and Israeli responses could strengthen the camp in Iran that believes that nuclear force is the ultimate deterrent, said Shine.

“The Iranians know how to do this technologically. There is no doubt about that,” she added. The key obstacle is whether Iran’s leadership will choose to cross the threshold.

Brig. Gen. (res.) Yossi Kuperwasser, a former head of the Research and Assessment Division of Israel’s Military Intelligence Directorate, echoed these concerns.

Kuperwasser is currently a senior research associate at the Jerusalem Center for Security and Foreign Affairs and at the Misgav Institute for National Security and Zionist Strategy.

He pointed out that while Iran has made significant advances, there is no concrete evidence that the regime has made a final decision to weaponize its nuclear capabilities. “We don’t have proof that this is happening,” he said.

According to Kuperwasser, Iran’s strategy could be influenced by the weakening of its proxy forces, Hezbollah and Hamas, who have suffered massive blows from Israel. “Hezbollah has been significantly weakened,” he noted, adding that this undermines Iran’s deterrence and could prompt the regime to explore the nuclear option as a form of ultimate deterrence.

“In light of Israeli successes, and in light of the fact that Trump could win the U.S. elections [scheduled for less than a month from now], this could strengthen those [in Iran] who support a breakout now,” said Kuperwasser. “At the same time, they also have considerations that pull them in the opposite direction. Even if they discussed this, there is no expression that, at this time, they took a certain decision to move forward.”

“It’s a very high risk, especially in the current environment,” he added.

An Oct. 11, 2024 report by the Britain Israel Communications and Research Centre (BICOM) outlined Iran’s continued production and accumulation of highly enriched uranium. The United Kingdom, France and Germany (known as the E3) have expressed alarm, stating in September 2024 that Iran’s actions “significantly harm international security and undermine the global non-proliferation architecture.” The E3 called on Iran to halt its nuclear escalation and return to the restrictions imposed by the Joint Comprehensive Plan of Action (JCPOA).

The United Nations International Atomic Energy Agency (IAEA) has also voiced concerns. According to its August 2023 report, Iran is the only non-nuclear-weapon state to produce and accumulate high-enriched uranium. The IAEA noted that Iran has amassed enough 60% enriched uranium to shorten the breakout time to less than two weeks, should it choose to enrich to the 90%, or weapon-grade, level. The BICOM report cites estimates from the Institute for Science and International Security, which indicate that Iran could produce its first 25 kilograms of weapons-grade uranium (enough for one nuclear device) within around one week. Using its advanced centrifuges and current stockpiles, Iran could produce enough material for up to 15 nuclear weapons within five months, according to the report.

Iran’s weaponization progress, the other step needed for the bomb, has also been drawing scrutiny. In March 2024, American and Israeli intelligence agencies obtained evidence of Iranian scientists engaging in research and computer modeling relevant to developing nuclear explosives, the BICOM report noted.

 Israeli officials warned in August that Iran is increasingly focused on acquiring the components necessary to build a nuclear warhead. A July 2024 intelligence report, filed to Congress by the U.S. Director of National Intelligence, removed a sentence that appeared in past reports on the subject since 2019, which stated that Iran is not currently undertaking key nuclear weapons-development activities necessary to produce a testable nuclear device.

Beyond uranium enrichment and weaponization, Iran has continued testing ballistic-missile delivery systems, the BICOM report said.

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