Iran on Sunday said that possible talks between the P5+1 group and Iran, on the latter's nuclear program, may take place in Istanbul, claiming that the Turkish foreign minister and EU foreign policy chief Catherine Ashton have agreed to the venue.
Iranian Foreign Minister Ali Salehi said Tehran is waiting for a response to a letter sent to the European Union representative last week, semi-official Iranian news agency Mehr reported.
The letter to Ashton, which was obtained by Reuters on Thursday, proposed resuming the stalled talks and said Tehran would have "new initiatives" to bring to the table.
But the brief letter, which responded to a letter Ashton sent to her Iranian counterpart in October, offered no specific proposals, leaving a question mark over Tehran's willingness to enter substantive negotiations on its nuclear work.
Reuters contributed to this report.