An Emirati diplomat earlier identified by Tehran as carrying a letter from U.S. President Donald Trump seeking to jump-start talks over Iran's rapidly advancing nuclear program met Wednesday with Iran's foreign minister in the Iranian capital.

A letter from U.S. President Donald Trump to Iran's clerical establishment has been delivered by Anwar Gargash, diplomatic adviser to the president of the United Arab Emirates, Iran's foreign ministry spokesperson and state media said on Wednesday.

U.S. President Donald Trump's letter to Iran's clerical establishment "will soon be delivered to Tehran by an Arab country," Iranian Foreign Minister Abbas Araqchi said in televised remarks on Wednesday.