Iran will soon hand a counter-proposal for a nuclear deal to the United States via Oman, Iranian foreign ministry spokesperson Esmaeil Baghaei said, in response to a U.S. offer that Tehran deems "unacceptable".

Iran said on Monday it will soon present a counter-proposal on a nuclear deal with the United States, after it had described Washington's offer as containing "ambiguities".Tehran and Washington have held five rounds of talks since April to thrash out a new nuclear accord to replace the deal with major powers that US President Donald Trump abandoned during his first term in 2018.

Iran said that it would soon send a counter-proposal to the US via Oman, in response to a US offer that Tehran deemed "unacceptable."