Svmuu News: White House Press Secretary Levitt stated that U.S. Presidential Envoy Witkov and Donald Trump son-in-law Kushner will attend the Iran conference; Iran would be well advised to reach a favorable agreement with the United States; technical negotiations will be held concurrently with the high-level talks; Donald Trump hopes the peace process will proceed smoothly, while reserving the right to use military force if necessary.(Jin Shi)