The term 'nuclear dust,' coined by US President Donald Trump, refers to Iran's stockpile of enriched uranium, which has become a focal point in negotiations aimed at resolving tensions between the United States and Iran. Trump indicated that Iran might be prepared to return this material, but significant challenges remain. The US is concerned that Iran's existing stockpile could enable nuclear weapon development, leading to demands for restrictions on uranium enrichment. In contrast, Iran maintains that its nuclear program is solely for peaceful purposes and has rejected any agreement that requires it to abandon enrichment entirely. The enriched uranium is believed to be stored at sites like the Isfahan nuclear complex and Natanz, complicating the discussions further. Recent negotiations have highlighted the stark differences in positions, with the US proposing a long-term freeze on enrichment for up to 20 years, while Iran has suggested much shorter timelines. The fate of Iran's existing uranium reserves is still unresolved, with the US advocating for their removal from Iranian territory. As both sides prepare for another round of talks, the issue of 'nuclear dust' remains a critical barrier to reaching a comprehensive agreement.