Talks between the US and Iran are ongoing in Switzerland, with negotiators expecting to work through the night after being shaken by threats. The status of the negotiations is unclear, with some reports indicating that the first round has ended and technical talks will continue, while others suggest that a road map for peace has been established. There are also conflicting reports on the progress made, with some citing "major progress" and a "good foundation" for a deal, while the overall outcome remains uncertain.