Washington. Top US diplomat Steve Wittek has departed for talks in Switzerland. US media have provided this information.He is going there after the scheduled talks between the United States and Iran were postponed. Axios, quoting US officials, stated that Wittek departed for the Alpine country on Friday.According to CNN, efforts are underway to advance technical-level talks between the US and Iran with the aim of bringing the initial peace agreement back on the right track.Similarly, Trump's envoy Jared Kushner is also expected to be in Switzerland for the talks. Axios, however, stated that he has already arrived there.It has not...