BURGENSTOCK, June 21. /TASS/. The Iranian delegation left the venue of the talks with the United States in Switzerland in protest against US President Donald Trump’s threats but has not wrapped up the negotiation officially, a source told TASS.

"Media reports that the talks have been ended are not quite true. Indeed, the Iranian delegation left the venue in protest against Trump’s threats. But they only headed to the hotel in the town for discussions. Talks may resume soon," he said.