The claim is supported on its main points by multiple in-run sources. BlockBeats, citing Axios, says U.S. officials indicated Vance would lead talks in Islamabad before the Tuesday-night ceasefire deadline and that Trump said 'the concept of a deal is completed.' Odaily, citing Reuters, says Iran was still reviewing whether to participate and had not made a final decision, which aligns with the claim's statement that Iran had not confirmed participation. The fetched X post also independently reflects the same reported development. Confidence is only medium because the directly cited primary reporting from Axios and Reuters was not fetched, and no official U.S. or Iranian statement was retrieved.