Iran's Supreme Leader Ayatollah Ali Khamenei on Wednesday rejected holding negotiations with the United States over a nuclear deal, as a letter was delivered from U.S. President Donald Trump calling for such talks.

A letter from US President Donald Trump to Iran's clerical establishment was delivered by Anwar Gargash, diplomatic adviser to the president of the United Arab Emirates, Iran's foreign ministry spokesperson,

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.