LAUSANNE, March 31. /TASS/. China’s Foreign Minister Wang Yi has left talks on the Iranian nuclear dossier in Switzerland’s Lausanne but his departure was planned, a diplomatic source taking part in the negotiations told TASS on Tuesday.

"There is no hidden meaning behind it," the source said. "This departure was a planned one. The minister has a very busy schedule."

China’s delegation at the talks between Iran and the P5+1 group of international mediators (the five permanent members of the United Nations Security Council and Germany) will be led by Foreign Ministry political director Wang Cun.