--- title: "Iran resumes offensive posture as 60-day US truce expires, lifting oil and yields" publication: "MediaBias News" url: "https://mediabias.news/business/iran-resumes-offensive-posture-as-60-day-us-truce-expires-lifting-oil-and-yields" api: "https://mediabias.news/api/v1/stories/iran-resumes-offensive-posture-as-60-day-us-truce-expires-lifting-oil-and-yields" markdown: "https://mediabias.news/business/iran-resumes-offensive-posture-as-60-day-us-truce-expires-lifting-oil-and-yields.md" audio: "https://mediabias.news/api/audio/iran-resumes-offensive-posture-as-60-day-us-truce-expires-lifting-oil-and-yields" category: "Business & Economy" area: "Middle East" published: "2026-08-18T04:46:07.911Z" source_reported: "2026-08-18T03:43:09.000Z" updated: "2026-08-18T05:45:28.854Z" trust_score: 64 critic_score: 77 hype_score: 15 assessment_type: "coverage-and-source-reporting-analysis" fact_check_status: "not-performed" coverage_measured: "2026-08-18T05:45:13.525964+00:00" --- # Iran resumes offensive posture as 60-day US truce expires, lifting oil and yields *Brent crude futures rose to US$91.06 a barrel and US Treasury yields climbed after Tehran announced a shift in military stance* **Scores for the source reporting** (0-100, assessing the original journalism this article was written from, not this write-up): - Trust 64 of 100, higher is better. Trust 64 – corroborated by several outlets, figures sourced and dated, but lacks a named individual source. - Craft 77 of 100, higher is better. Critic 77 – explains relevance, separates fact from comment, provides specific data, and reads clearly as a single story. - Hype 15 of 100, lower is better. Hype 15 – language is measured with no sensationalist or click‑bait phrasing. Scored by MediaBias News; method at https://mediabias.news/methodology. **The short version** - The 60-day US-Iran truce ended on 17 August 2026, with Tehran announcing a 'fully offensive' military posture. - Brent crude futures rose 0.2% to US$91.06 a barrel, and US Treasury yields climbed, with the 10-year yield up 0.8 basis points to 4.728%. - Asian equity markets were mixed: South Korea’s KOSPI gained over 3%, while Japan’s Nikkei 225 fell 0.3%. - No left-rated outlet reported on the story, according to the material provided. The 60-day truce between the US and Iran ended on 17 August 2026. Tehran announced it would shift to a 'fully offensive' military posture, as reported by PerthNow. Oil prices rose more than US$2 on 16 August, with Brent crude futures up 0.2% to US$91.06 a barrel when trading resumed in Asia on 18 August. US Treasury yields increased. The 10-year yield rose 0.8 basis points to 4.728%, and the 30-year yield climbed 0.6 basis points to 5.3146%, its highest level in more than two decades, according to PerthNow. Asian equity markets showed mixed results: MSCI’s Asia-Pacific index (excluding Japan) gained 0.8%, South Korea’s KOSPI rose over 3%, and Japan’s Nikkei 225 fell 0.3%. ING analysts, quoted by PerthNow, said the US 10-year yield moving above 4.65% had previously prompted reassurances from the Trump administration about resolving the conflict with Iran. This time, they said, there were no indications of an imminent resolution. ## What the coverage left out None of the right-rated digests mentioned the specific figures for US Treasury yields or the mixed performance of Asian equity markets. No left-rated outlet ran the story at all, according to the material provided. ## Who covered it Shares of the 9 covering outlets with a published leaning rating: - Left: 0% (0) - Centre: 67% (6) - Right: 33% (3) 3 of 12 covering outlets carried no usable leaning rating and were excluded from those percentages. Coverage measured 2026-08-18T05:45:13.525964+00:00. **Coverage watch:** developing. Checked 6 times; 1 check found a material change. Most recently checked 2026-08-18T06:15:17.229Z. ## How the sides framed it ### Left No separate framing summary. ### Centre - The centre-rated reports agree that the 60-day US-Iran truce ended on 18 August 2026, with Iran announcing a shift to a "fully offensive" military posture. All five outlets led on the resulting rise in oil prices and bond yields. PerthNow and Channel News Asia specified Brent crude futures at US$91.06 and US$91.20 a barrel, respectively. - PerthNow, Channel News Asia, and WTVB’s digest included Tehran’s statement on its military posture. The two full reports quoted ING and Westpac analysts attributing market movements to the truce’s expiry and President Trump’s refusal to extend it. None of the digests mentioned the US retail sales drop or its effect on Federal Reserve rate expectations. - Channel News Asia and PerthNow carried the yield on the US 30-year Treasury bond reaching its highest level in nearly 20 years. Both full reports noted the US dollar index near a two-month low, while PerthNow added gold and cryptocurrency movements. hngn.com’s digest alone mentioned Trump’s threat to bomb Oman over the Strait of Hormuz standoff. ### Right - The three right-rated digests led on the expiration of the US-Iran truce and its immediate economic effects. Free Malaysia Today’s digest noted that Asian stocks gave up early gains as Tehran threatened a 'fully offensive' military posture, with no imminent resolution in sight. The Straits Times’ digest focused on the rise in Brent crude futures to US$91.06 a barrel. - The West Australian’s digest highlighted the US$2 rise in oil prices on 16 August, attributing it to the stalemate in Iran refocusing traders on global supply concerns. None of the right-rated digests mentioned the specific movements in US Treasury yields or the mixed performance of Asian equity markets. **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. - mixed: 1 - high: 4 - unknown: 4 - veryHigh: 3 ## 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 - [Reuters](https://reuters.com/world/india/indian-shares-set-muted-open-oil-tops-91-us-iran-ceasefire-expires-2026-08-18) — Indian shares dip as oil tops $91, US-Iran ceasefire expires - [Channel News Asia](https://channelnewsasia.com/business/bond-yields-jump-oil-extends-gains-us-iran-ceasefire-expires-6324846) — Bond yields jump, oil extends gains as US-Iran ceasefire expires - [PressNewsAgency](https://pressnewsagency.org/bond-yields-jump-oil-extends-gains-as-us-iran-ceasefire-expires) — Bond yields jump, oil extends gains as US-Iran ceasefire expires - [Free Malaysia Today News](https://freemalaysiatoday.com/category/business/2026/08/18/bond-yields-jump-oil-extends-gains-as-us-iran-ceasefire-expires) — Bond yields jump, oil extends gains as US-Iran ceasefire expires - [The Straits Times](https://straitstimes.com/business/oil-prices-climb-bond-yields-rise-as-us-iran-ceasefire-expires) — Oil prices climb, bond yields rise as US-Iran ceasefire expires - [Cryptocurrency News | Cryptocurrency Prices | Market Cap](https://cryptocurrency.com.tr/oil-prices-climb-bond-yields-rise-as-us-iran-ceasefire-ends-344092) — Oil prices climb, bond yields rise as US-Iran ceasefire ends - [Crypto Briefing](https://cryptobriefing.com/oil-prices-climb-bond-yields-rise-as-us-iran-ceasefire-ends) — Oil prices climb, bond yields rise as US-Iran ceasefire ends - [The West Australian](https://thewest.com.au/business/oil-prices-climb-as-us-iran-ceasefire-expires-c-22739199) — Oil prices climb as US-Iran ceasefire expires - [PerthNow](https://perthnow.com.au/news/business/oil-prices-climb-as-us-iran-ceasefire-expires-c-22739196) — Oil prices climb as US-Iran ceasefire expires - [WTVB](https://wtvbam.com/2026/08/17/oil-prices-climb-bond-yields-rise-as-us-iran-ceasefire-expires) — Oil prices climb, bond yields rise as US-Iran ceasefire expires - [hngn.com](https://hngn.com/articles/272786/20260817/stocks-fall-oil-surges-past-84-iran-deadline-expiry-hormuz-tensions-reignite.htm) — Stocks Drop, Oil Jumps as Iran Hormuz Deadline Expires Monday - [Wall Street Journal](https://wsj.com/wsjplus/dashboard/articles/oil-rises-bond-yields-climb-on-iran-tensions-ba2bb60b) — Oil Rises, Bond Yields Climb on Iran Tensions ## Questions **What happened to oil prices after the US-Iran truce ended?** Brent crude futures rose 0.2% to US$91.06 a barrel after the 60-day US-Iran truce expired on 17 August 2026. Oil prices had already risen more than US$2 the previous day as traders refocused on global supply concerns due to the stalemate in Iran. **How did US Treasury yields react to the end of the truce?** US Treasury yields increased after the truce ended. The 10-year yield rose 0.8 basis points to 4.728%, and the 30-year yield climbed 0.6 basis points to 5.3146%, reaching its highest level in more than two decades, as reported by PerthNow. **Which outlets reported on the story, and which did not?** Three centre-rated outlets (PerthNow, Wall Street Journal, WTVB) and three right-rated outlets (Free Malaysia Today, The Straits Times, The West Australian) reported on the story. No left-rated outlet ran the story, according to the material provided. **What did Tehran announce after the truce expired?** Tehran announced it would adopt a 'fully offensive' military posture after the 60-day US-Iran truce ended on 17 August 2026. This shift was reported by PerthNow and referenced in digests from Free Malaysia Today and WTVB. --- MediaBias News — https://mediabias.news. Reproduced from https://mediabias.news/business/iran-resumes-offensive-posture-as-60-day-us-truce-expires-lifting-oil-and-yields. Please cite as: MediaBias News, "Iran resumes offensive posture as 60-day US truce expires, lifting oil and yields", https://mediabias.news/business/iran-resumes-offensive-posture-as-60-day-us-truce-expires-lifting-oil-and-yields