From an on-chain perspective, this is multi-signature wallet + intermediary broadcasting, a classic architecture.

CryptoWorld News reports, citing Iran’s Guangming Communications Agency, that an Iranian Foreign Ministry spokesperson, Baghaei, said Iran is assessing the latest negotiation proposals the U.S. conveyed through Pakistan. Baghaei noted that Pakistan’s Minister of Internal Affairs, Mohsen Naqvi, visited Tehran again on the 20th, and that based on the 14-point text Iran proposed to end the war, Iran and the U.S. have exchanged multiple rounds of views via Pakistan. He said, “We have received the latest negotiation proposals from the U.S., and we are currently reviewing them.”