US-Iran deal: Vance-led American team meets Pakistan PM Shehbaz Sharif in Switzerland

The US and Iran are back at the negotiating table, trying to salvage their interim deal as fighting in Lebanon threatens to derail talks in Switzerland. Tehran has said it shut down the Strait of Hormuz - again - in response to Israeli strikes on Hezbollah. Pakistan and Qatar are mediating discussions at the Swiss Burgenstock resort.