Tehran faces mounting pressure as E3 prepares snapback sanctions mechanism
On July 21, the Iranian regime announced that high-level talks with European powers would take place in Istanbul on July 25 to address the country’s escalating nuclear crisis. According to Tehran’s Foreign Affairs Ministry, senior regime officials Majid Takht Ravanchi and Kazem Gharibabadi will represent Iran in discussions with representatives from the United Kingdom, France, and Germany — collectively known as the E3.
These talks come at a critical moment, as the E3 has issued a firm ultimatum: unless Tehran returns to nuclear negotiations with the United States and demonstrates tangible progress by the end of August, they will move to trigger the Joint Comprehensive Plan of Action (JCPOA) “snapback” mechanism. This measure would reimpose United Nations Security Council sanctions that were previously lifted under the 2015 nuclear deal.
With the JCPOA snapback mechanism set to expire in October 2025, the E3 would need to initiate proceedings by September 3 to ensure sanctions are reinstated in time. Such a move could significantly isolate Tehran diplomatically and economically.
Despite the looming threat, regime Foreign Affairs Ministry spokesperson Esmail Baghaei insisted that the upcoming Istanbul meeting is not connected to nuclear talks with Washington, reiterating that “Iran has no plans” to engage in direct negotiations with the United States. Instead, the regime appears to be doubling down on building alliances elsewhere.
In parallel with its European diplomacy, Tehran has announced a separate meeting with Russian and Chinese officials on July 22 to discuss the potential consequences of the snapback mechanism. However, experts note that neither Moscow nor Beijing is in a position to prevent the reinstatement of sanctions if the E3 proceeds. Under the JCPOA framework, any signatory can refer Tehran’s non-compliance to the UN Security Council, triggering a 30-day window during which a resolution to extend Iran’s sanctions relief must be passed. Crucially, any permanent UNSC member — including the US, UK, or France — can veto such a resolution, rendering Chinese or Russian intervention effectively powerless.
The regime’s diplomatic outreach also coincides with efforts to secure military support from Russia. On July 21, Iranian Defense Minister Brigadier General Aziz Nasir Zadeh met with his Russian counterpart, Andrei Belousov, in Moscow. Official sources claimed the talks focused on “expanding military cooperation,” while Nasir Zadeh also joined regime adviser Ali Larijani in a separate meeting with President Vladimir Putin on July 20.
Iran’s defense establishment, which Nasir Zadeh leads, is urgently seeking upgrades to its military hardware following significant losses during the recent war. Tehran has long pressured Moscow to provide Su-35 fighter jets and advanced S-400 air defense systems, particularly after Israeli strikes in 2024 disabled all four of Iran’s S-300 systems. Yet, despite years of strategic alignment, Russia has so far withheld these systems, highlighting the limits of its support.
Analysts suggest this lack of Russian military assistance may push Tehran to intensify its outreach to China or other partners, as it struggles to rebuild its regional posture in the aftermath of war and under the shadow of renewed sanctions.
The regime finds itself cornered — under diplomatic threat from Europe, militarily weakened, and increasingly dependent on reluctant allies. While it seeks to maintain defiance against Western pressure, the clock is ticking on a nuclear crisis that could soon escalate beyond its control.
