Iran nuclear chief warns US over support for Saudi Arabia

The head of Iran’s atomic energy organisation, one of the architects of the 2015 landmark nuclear deal, has warned the US to stop upsetting the regional balance of power by siding with Saudi Arabia.

Writing in the Guardian, Ali Akbar Salehi said "lavish arms purchases” by regional actors – a reference to the Saudi purchase of $100bn of US arms during Donald Trump’s recent visit to Riyadh – would be seen as provocative in Tehran and that it would be unrealistic to expect Iran to remain "indifferent”.

Salehi, an MIT graduate scientist who has also served as foreign minister, was the second most senior Iranian negotiator, dealing with technical aspects, during nearly two years of talks between Tehran and six of the world’s major powers that led to the final nuclear accord in Vienna in July 2015.

Although Trump has promised to "dismantle the disastrous deal with Iran”, he has not so far taken any concrete steps to scrap it. Last month, two days before Iran’s presidential election, his administration announced that it was continuing to waive nuclear-related sanctions under the agreement despite Washington toughening up its overall Iran policy.

Salehi said it was possible to rescue the deal’s engagement if it was met with reciprocal gestures. "Often following hard-won engagement, some western nations, whether distracted by short-sighted political motivations or the lucrative inducements of regional actors, walk away and allow the whole situation to return to the status quo ante,” wrote Salehi, who is also a vice-president of Iran.

Salehi warned of "chaotic behaviour” and "further tension and conflict” if the other side disregarded Iran’s security concerns, failed to adhere to its commitments and insisted on what he called alternative facts including ideas such as the "clash of civilisations”, "Sunni-Shia conflict”, "Persian-Arab enmity” and the "Arab-Israeli axis against Iran”.