Tehran has dismissed media reports stating it held secret talks with Washington.
Six world powers want Iran to curb nuclear enrichment, which can produce both reactor fuel and nuclear warhead material.
Turkey has agreed to stay out of international efforts to pressure Iran on nuclear issue, a senior US official has said.
President Mahmoud Ahmadinejad demanded on Thursday that world powers respect Iran and release its assets if they want to engage with Tehran, in an apparent reference to archfoe the United States.
Iran has said the UN atomic watchdog had confirmed its nuke programme was peaceful and vowed to resist political pressure to change it, a news agency reported.
Day in Pics: 21st October
Showbiz World - October 21, 2014
Dia Mirza-Sahil Sangha Wedding Pictures