Fox News chief national security correspondent Jennifer Griffin has the latest on Iran's claims of developing an advanced hypersonic missile on'Special Report.' United States officials believe Iran is sending Russia materials to build a drone manufacturing plant east of Moscow to produce more Iranian drones to use in Ukraine. The intelligence was made public by the National Security Council's Coordinator for Strategic Communications John Kirby on Friday. "As of May, Russia received hundreds of one-way attack [unmanned aerial vehicles], as well as UAV production-related equipment, from Iran," Kirby said. Russian President Vladimir Putin takes part in the ceremony of signing an agreement on the construction of the Rasht-Astara railway via a video link together with Iranian President Ebrahim Raisi, at the Kremlin in Moscow.