Qatari negotiators are expected to arrive in Tehran on Sunday as part of ongoing efforts to secure a final agreement aimed at ending the war between the United States (US) and Iran.
US and Pakistani leaders have expressed optimism that a framework agreement could be signed on Sunday.
This could potentially bring an end to the war, which started more than three months ago.
However, Tehran has cast doubt on the proposed timeline as protesters in Iran voice opposition.
Video| Iranian officials arrive in Qatar for peace talks: Kate Fisher reports
