The ongoing negotiations between Iran and the US regarding a ceasefire may hinge on Iran's demand for the return of over $100 billion in frozen assets abroad, which have been blocked due to sanctions. The US has historically used sanctions to limit Iran's access to these funds, leading to severe economic consequences for the country. The negotiations will also address the conditions under which these assets might be unfrozen, with Iran's economic situation worsening due to high inflation and currency devaluation. The US has previously allowed limited access to some frozen assets under specific agreements, but the current political climate complicates the potential for a resolution.