Israeli Prime Minister Benjamin Netanyahu has revealed what he says are “secret nuclear files” proving Iran covertly pursued nuclear weapons.
He said thousands of pages of material obtained by Israel showed Iran had deceived the world by denying it had ever sought nuclear weapons.
Iran agreed in 2015 to curb its nuclear energy programme in return for the lifting of sanctions.
It maintained that it had only been pursuing nuclear energy.
Tweeting earlier, Iranian Foreign Minister Javad Zarif appeared to accuse Mr Netanyahu of “fooling people”.
US President Donald Trump has long threatened to scrap the deal, which was reached under his predecessor, Barack Obama.
European powers have said they are committed to upholding the accord.
The Israeli premier, who has repeatedly called for the accord between world powers and his country’s main enemy Iran to either be altered or scrapped, gave a PowerPoint presentation live on television allegedly of Iran’s nuclear dossier.