Iran's Nuclear Leverage Grows Amid US-Israeli Conflict

The ongoing conflict between the US and Israel and Iran has significantly altered the dynamics of the nuclear programme negotiations. Former US envoys who dealt with Iran have stated that the US-Israeli attack on Iran and Tehran's subsequent closure of the Strait of Hormuz have given Iran new tools and resolve to resist pressure to shutter its nuclear programme.

Two senior negotiators for the Joint Comprehensive Plan of Action (JCPOA), the Obama-era agreement to limit Iran's nuclear uranium enrichment in exchange for sanctions relief, said the Trump administration's war had handed Iran a coveted weapon by demonstrating its ability to cut off the Strait of Hormuz, an economic chokehold that one negotiator said would help Iran 'balance the asymmetry of power' with the US.

Alan Eyre, a former diplomat who helped negotiate the JCPOA, noted that 'this administration, to say it more politely, cannot unsoil the bed. There's no way to get back to the status quo ante before this war started.'

In 2018, Donald Trump withdrew the US from the JCPOA, which barred Tehran from enriching its uranium to weapons-grade. Trump called the deal 'one of the worst and most one-sided transactions' the US had ever entered into.

However, after a strategy of high pressure – first through returning sanctions and then, after Trump's return to power in 2025, a war that was meant to destroy Iran's nuclear and ballistic missile capabilities – the current US administration has found itself in more complex negotiations than before its campaign of economic and military strikes.

Robert Malley, a Yale lecturer who was former special envoy to Iran under Joe Biden and a lead negotiator on the JCPOA, said: 'The strait of Hormuz wasn't an issue before the US decided to strike. You have all the issues inherited from the past, but you just added a few, because the US has handed Iran a tool that it always had, but it never thought of using, or never felt it could.'

The chances for a comprehensive agreement addressing all of the US and Iran's grievances appear slim. While the Obama administration sought to negotiate exclusively on Iran's nuclear programme in the lead-up to the 2015 agreement, the Trump administration has sought a broader deal limiting Iran's ballistic missiles programme and its support for regional proxies, such as Hezbollah in Lebanon and the Houthis in Yemen.