The claim specifies details (two rounds held, third scheduled for later evening) reported by 'Islamic Republic of Iran Broadcasting.' The provided evidence consists only of general Wikipedia entries about future negotiations or historical timelines, none of which confirm the specific details of talks held on a 'Saturday' involving two rounds and a third scheduled round. Since no independent or corroborating evidence was found for this specific report, and the evidence provided is not specific enough to confirm the claim, it must be marked as single_source based on the premise that the claim relies solely on the unverified reporting mentioned in the claim itself.

The claim states that 'Iran and the US delegations held two rounds of talks in Islamabad, according to Islamic Republic of Iran Broadcasting.' Similar to Claim 0, the provided evidence consists only of general Wikipedia entries regarding Iran-US relations or future conflicts, none of which confirm the specific event, location (Islamabad), or number of talks reported by the specified source. Therefore, the claim relies on a single, uncorroborated source mention.