Suspension of the Nuclear Understanding and ICBM Test: Iran at a Decisive Crossroads
WANA (Sep 21) – On September 20, Iran’s Supreme National Security Council, chaired by the president, announced the suspension of cooperation with the International Atomic Energy Agency (IAEA). The move came in response to the activation of the “snapback” mechanism by three European countries and the failure to pass a resolution extending the suspension of six UN Security Council resolutions against Iran—effectively restoring UN sanctions and marking the start of a new phase in the nuclear and diplomatic standoff between Tehran and the West.
The understanding reached by Abbas Araghchi and Rafael Grossi in Cairo was intended as a tactical measure to reduce tensions and limit Western pretexts. But the activation of the snapback mechanism showed that Europe was prepared to reimpose sanctions. By suspending the understanding, Tehran signaled its determination for “negotiations without offering practical concessions” and underlined that it would not compromise on its red lines.
Following the Security Council’s failure to adopt the resolution, Iran’s permanent representative to the UN declared: diplomacy remains open, but Iran will decide with whom and on what issues it will engage.
Cairo Agreement between Iran and IAEA. Social media/ WANA News Agency
ICBM Test: A Message from the Field
Two days before the suspension—on September 18—Iran tested an advanced intercontinental ballistic missile (ICBM). Mohsen Zanganeh, a member of parliament, told the media: “The night before last we tested one of the most advanced missiles in the country, one that had never been tried before, and it was successful.” He stressed that Iran had neither abandoned uranium enrichment nor compromised its missile capabilities.
Striking images of the missile test, visible from several Iranian cities, sparked informal but noteworthy analyses: the unusual trail and flare suggested the use of a scramjet engine with Pulsed Detonation Engine technology. This propulsion system compresses fuel and air through pulsed explosions, producing highly efficient thrust. Crucially, such technology had previously remained experimental in the United States—yet Iran appears to have operationalized it.
Beyond the technical details, the political message was clear: Iran showcased its strategic capabilities. Satellite-launch and long-range missile technologies overlap in several respects; thus, every launch can be interpreted both as a demonstration of missile power and as progress in space technology. By timing the test just two days before suspending the understanding, Tehran sent a pointed message to the West: tactical flexibility is possible, but red lines remain intact.
Striking video of the missile test, visible from several Iranian cities. 18 Sep 2025. Social Media / WANA News Agency
Inside Iran: Watching the Diplomats
Within Iran, attention is focused on the Foreign Ministry and the negotiating team. The bitter memory of the 2015 nuclear deal still lingers, yet over the past year diplomacy has been pursued on the basis of “talks without tangible concessions”—negotiations aimed at reducing pretexts without yielding core positions. Analysts argue this approach has both preserved domestic legitimacy and strengthened Iran’s leverage internationally.
Decisive Options
The full suspension of IAEA cooperation, stepped-up missile activities, and repeated official warnings of “reciprocal and regret-inducing measures” all point toward the possibility of a shift in the rules of the game. The central question now: will Iran limit itself to tactical maneuvers, or will it take the ultimate step—withdrawal from the Nuclear Non-Proliferation Treaty (NPT)? Several lawmakers, including Ebrahim Rezaei, have openly stressed that this option is seriously on the table.
Europe’s Snapback Gamble Risks Iran’s Exit from NPT
WANA (Sep 20) – With the failure of a UN Security Council resolution to extend sanctions relief for Iran, and mounting pressure from three European powers to trigger the so-called “snapback” mechanism, Tehran has warned that it may withdraw from the Nuclear Non-Proliferation Treaty (NPT) and take further retaliatory measures. The standoff underscores a diplomatic […]
Israel and its allies are closely monitoring Iran’s advances. Statements by security officials and analysts about potential operations inside Iran suggest that any direct attack could provoke responses beyond current calculations.
Mossad chief David Barnea remarked at a ceremony: “We have shown that Iran is penetrable and that we have carried out operations even in the heart of Tehran.” Yet some Israeli analysts warn that a direct strike against Iran could only accelerate Israel’s decline. Alon Mizrahi noted: “Another strike against Iran is coming very soon… but it will only hasten the fall.”
By suspending the Cairo understanding and testing an ICBM, Tehran has orchestrated a coordinated chain of tactical and strategic moves: negotiations without concessions, a display of defensive strength, and an implicit threat of reciprocal action. But the key question remains: can this deterrence strategy withstand the mounting pressure of sanctions, or will Iran rewrite the nuclear rulebook and enter a phase of confrontation with consequences reaching far beyond the region? Will Iran take the ultimate step—exiting the NPT?
