--- title: "Russia and Iran collaborate on supersonic missile programme C430L" publication: "MediaBias News" url: "https://mediabias.news/conflict/russia-and-iran-collaborate-on-supersonic-missile-programme-c430l" api: "https://mediabias.news/api/v1/stories/russia-and-iran-collaborate-on-supersonic-missile-programme-c430l" markdown: "https://mediabias.news/conflict/russia-and-iran-collaborate-on-supersonic-missile-programme-c430l.md" audio: "https://mediabias.news/api/audio/russia-and-iran-collaborate-on-supersonic-missile-programme-c430l" category: "Conflict & Security" area: "Middle East" published: "2026-09-02T01:05:24.860Z" source_reported: "2026-09-02T00:30:26.000Z" updated: "2026-09-02T01:05:24.860Z" trust_score: 62 critic_score: 55 hype_score: 35 assessment_type: "coverage-and-source-reporting-analysis" fact_check_status: "not-performed" coverage_measured: "2026-09-02T01:00:23.251446+00:00" --- # Russia and Iran collaborate on supersonic missile programme C430L *Financial Times investigation reveals secret 2023 project to develop weapons targeting US warships in the Middle East* **Scores for the source reporting** (0-100, assessing the original journalism this article was written from, not this write-up): - Trust 62 of 100, higher is better. Two full reports and eight digests agree on core facts, but sourcing is anonymous. - Craft 55 of 100, higher is better. Quotes and context present, but no affected party or Russian reply. - Hype 35 of 100, lower is better. Headlines overstate certainty; body notes lack of deployment evidence. Scored by MediaBias News; method at https://mediabias.news/methodology. **The short version** - A secret Russian-Iranian programme, C430L, began in 2023 to develop supersonic cruise missiles targeting US warships in the Middle East. - The programme uses Russian missile experts and involves leaked correspondence, travel records, and patent analysis, as reported by ZN.UA and the Financial Times. - Iran has tested a ramjet engine but no Russian-assisted supersonic missile has been deployed, according to ZN.UA and the Daily Star. - The US and Iran have been in conflict since 28 February 2026, with exchanges of attacks reported by the Daily Star and i24NEWS. Russia and Iran have collaborated on a secret programme to develop supersonic cruise missiles, according to an investigation published by the Financial Times and reported by ZN.UA. The programme, codenamed C430L, began in 2023 and involves Russian missile experts assisting Iran in creating weapons designed to threaten US aircraft carriers and warships in the Middle East. The project aims to develop a ramjet propulsion system, enabling cruise missiles to sustain flight at speeds several times faster than sound. Supersonic cruise missiles reduce the time available for air and missile defence systems to detect and intercept them, which would give Iran an advantage in the Persian Gulf. The programme is coordinated by Russia’s state arms exporter, Rosoboronexport, and the missile manufacturer NPO Mashinostroyeniya. Leaked correspondence, travel records, and analysis of military patents revealed the programme’s existence. Russian engineers have reviewed Iranian flight test data and provided technical feedback to improve the system. Iran has already constructed and tested a ramjet engine, but there is no evidence that a Russian-assisted supersonic cruise missile has been deployed. Fabian Hinz, an expert on Iranian missiles, told ZN.UA and the Daily Star that the technology transfer would require approval at the highest political level in Russia. Jim Lamson, a former CIA military analyst, said the programme would provide Iran with a qualitatively new strategic weapon system capable of threatening US Navy vessels. ## What the coverage left out No left-rated outlet ran this story. None of the right-rated digests or full reports mentioned that Iran supplied Russia with Shahed drones used in Ukraine, a detail reported by ZN.UA. The cost of the C430L programme and the specific technical challenges identified by Russian engineers in their correspondence with Iran were also omitted from all right-rated reports. ## Who covered it Shares of the 8 covering outlets with a published leaning rating: - Left: 0% (0) - Centre: 12% (1) - Right: 88% (7) 4 of 12 covering outlets carried no usable leaning rating and were excluded from those percentages. Coverage measured 2026-09-02T01:00:23.251446+00:00. **Coverage watch:** developing. Checked 1 time; 0 checks found a material change. Most recently checked 2026-09-02T01:15:25.385Z. ## How the sides framed it ### Left No separate framing summary. ### Centre - ZN.UA’s report led on the strategic significance of the C430L programme, describing it as one of the largest known transfers of strategic military technology from Russia to Iran. It detailed the involvement of Russian state entities, including Rosoboronexport and NPO Mashinostroyeniya, and the technical collaboration between Russian engineers and Iranian missile developers. - The report quoted Fabian Hinz stating that the programme would require political approval at the highest level in Russia. It also included analysis from Jim Lamson, who described the potential threat to US Navy vessels. ZN.UA noted that Iran had previously supplied Russia with Shahed drones used in Ukraine, highlighting the deepening military cooperation between the two countries. ### Right - The seven right-rated digests and two full reports led on the threat posed by the C430L programme to US warships in the Middle East. The Daily Star’s full report framed the programme as part of an ongoing conflict between the US and Iran, which began on 28 February 2026. It quoted Fabian Hinz on the need for high-level Russian approval and Jim Lamson on the strategic implications for US Navy vessels. - The Daily Star and i24NEWS both reported that the US and Iran have been in conflict since February 2026, with exchanges of attacks. The Daily Star’s headline described the missiles as ‘supersonic’ and emphasised their potential use against US warships. The digests from the Daily Express, Observador, Globo, End Time Headlines, Australian Financial Review, and i24NEWS all highlighted the threat to US aircraft carriers and warships. **Provisional coverage gap:** left. The watch is not closed, so this is not yet a settled blindspot finding. ## Factuality profile of the covering outlets These are published factuality ratings of the outlets, not a verdict on whether this story or its claims are true. - low: 1 - mixed: 1 - high: 6 - unknown: 4 ## Verification scope This page compares coverage and scores the source reporting. It is not a ClaimReview verdict on whether the underlying event or claim is true. ## Original reporting this was written from - [ZN.UA Зеркало недели](https://zn.ua/WORLD/rossija-tajno-pomohaet-iranu-sozdat-rakety-dlja-nanesenija-udarov-po-korabljam-ssha-ft.html) — Russia Is Secretly Helping Iran Build Missiles to Attack US Ships. - [Daily Star](https://dailystar.co.uk/news/latest-news/russia-secretly-helping-iran-develop-37617044) — Russia Secretly Helping Iran Develop 'Supersonic' Missiles - [Daily Express](https://express.co.uk/news/world/2244632/russia-iran-supersonic-missiles-development) — Russia secretly helping Iran develop 'supersonic' missiles as WW3 fears explode - [SIC Notícias](https://sicnoticias.pt/mundo/medio-oriente/2026-09-01-russia-esta-a-ajudar-secretamente-o-irao-a-desenvolver-misseis-de-cruzeiro-supersonicos-f3a24925) — Russia Is Secretly Helping Iran Develop Supersonic Cruise Missiles - [Observador](https://observador.pt/2026/09/01/russia-ajuda-irao-a-desenvolver-misseis-supersonicos-capazes-de-ameacar-navios-de-guerra-dos-eua-no-medio-oriente) — Russia Helps Iran Develop Supersonic Missiles Capable of Threatening U.S. Warships in the Middle East - [Globo](https://g1.globo.com/mundo/noticia/2026/09/01/em-plano-secreto-russia-esta-ajudando-ira-a-desenvolver-misseis-supersonicos-diz-jornal.ghtml) — Russia Is Helping Iran Develop Supersonic Missiles, Says FT - [End Time Headlines](https://endtimeheadlines.org/2026/09/russia-helping-iran-develop-supersonic-cruise-missiles) — Russia helping Iran develop supersonic cruise missiles - [Noticias ao Minuto](https://noticiasaominuto.com/mundo/3044889/russiaajudairao-a-desenvolver-misseis-de-cruzeiro-supersonicos-avancados-media) — Russia Helps Iran Develop Advanced Supersonic Cruise Missiles - [Australian Financial Review](https://afr.com/world/middle-east/russia-secretly-helping-iran-develop-supersonic-cruise-missiles-20260902-p60tlh) — Russia secretly helping Iran develop supersonic cruise missiles - [Cryptocurrency News | Cryptocurrency Prices | Market Cap](https://cryptocurrency.com.tr/russia-aids-iran-in-supersonic-missile-tech-development-ft-362147) — Russia aids Iran in supersonic missile tech development: FT - [Crypto Briefing](https://cryptobriefing.com/russia-aids-iran-in-supersonic-missile-tech-development-ft) — Russia aids Iran in supersonic missile tech development: FT - [i24NEWS](https://i24news.tv/en/news/middle-east/iran-eastern-states/artc-russia-secretly-helped-iran-develop-advanced-missiles-report) — Russia secretly helped Iran develop advanced missiles ## Questions **What is the C430L programme?** The C430L programme is a secret Russian-Iranian collaboration launched in 2023 to develop supersonic cruise missiles. It aims to create weapons capable of threatening US warships in the Middle East, using a ramjet propulsion system for high-speed flight. The project involves Russian missile experts and leaked correspondence. **Has Iran deployed any Russian-assisted supersonic missiles?** No evidence has emerged that Iran has deployed any Russian-assisted supersonic cruise missiles. While Iran has tested a ramjet engine, the programme remains in development, according to reports by ZN.UA and the Daily Star. **Why is the C430L programme significant?** The C430L programme is significant because it represents a major transfer of strategic military technology from Russia to Iran. Experts say it would provide Iran with a new class of weapons capable of evading US air and missile defences, posing a direct threat to US Navy vessels in the Persian Gulf. **Which outlets reported on the C430L programme?** The programme was first reported by the Financial Times and covered by outlets including ZN.UA, the Daily Star, and i24NEWS. Seven right-rated outlets ran digests or full reports, while no left-rated outlet covered the story. --- MediaBias News — https://mediabias.news. Reproduced from https://mediabias.news/conflict/russia-and-iran-collaborate-on-supersonic-missile-programme-c430l. Please cite as: MediaBias News, "Russia and Iran collaborate on supersonic missile programme C430L", https://mediabias.news/conflict/russia-and-iran-collaborate-on-supersonic-missile-programme-c430l