US President Donald Trump indicated on Thursday that US control over Iran's enriched uranium stockpile could be part of any potential peace agreement with Tehran to ensure that Iran cannot develop a nuclear weapon. However, on the Iranian side, a source has said that Iran's Supreme Leader Mojtaba Khamenei had directed that uranium enriched to near weapons-grade levels must remain inside Iran. Amid negotiation standoff, Pakistan is continuing its mediation efforts in hopes of securing a deal. Join CGTN for the latest.