Live Updates: U.S.-Iran deal signing gets more ships moving in Strait of Hormuz, but big challenges remain

U.S.-Iran talks will begin in Switzerland on Friday. Switzerland's government confirmed Thursday that 'initial negotiations' under the U.S.-Iran agreement were set to begin at a Swiss lakeside resort on Friday.

'Currently, the plan remains for the United States and Iran, along with the mediators Pakistan and Qatar and other involved countries, to meet tomorrow at the Burgenstock for initial negotiations on the implementation of the agreement,' the Swiss foreign ministry said in a statement.

The announcement lifted a veil of uncertainty that had hung over the meeting at the Burgenstock luxury hotel complex near Lucerne in central Switzerland, initially announced on Tuesday.

At the time, it had been billed as a signing ceremony of the memorandum of understanding, but the signing was unexpectedly moved forward, with President Trump laying down his signature Wednesday at a candlelit dinner outside Paris, as Iranian President Masoud Pezeshkian signed remotely.

At least 10 commercial vessels were transiting the Strait of Hormuz Thursday morning amid a noticeable increase in traffic hours after President Trump and his Iranian counterpart signed the agreement between the two countries.