Ali MadanizadehSim Moh SiongAsim MunirHossein MohebbiKevin WarshMasoud PezeshkianRay AttrillDonald TrumpScott BessentTreasury DepartmentIslamic Revolutionary Guard CorpsU.S. TreasuryNational Australia BankPress TVFederal ReserveOCBC

Iran vows retaliation as U.S. widens sanctions but withholds harsher options; dollar struggles as markets weigh Treasury buybacks

Iran has vowed retaliation against the U.S. following expanded sanctions that threaten its economic lifeline, while the dollar struggles amid market uncertainty. Treasury Secretary Scott Bessent warned nations to sever ties with Iran or face exclusion from the dollar-based financial system, but withheld harsher penalties.

CNA CNA+1 source25 August 2026 · 02:30 UTC
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Iran has vowed to retaliate against the U.S. following the announcement of expanded sanctions that threaten its economic lifeline. Treasury Secretary Scott Bessent's measures target 60 individuals and entities but stop short of harsher penalties, aiming to give countries time to comply.

Iran's Economy Minister Ali Madanizadeh stated, "We are fully prepared for the US sanctions." He emphasized that Iran has tools to counteract the sanctions, asserting, "Our defence is no longer so defensive; the enemies should wait for an attack." Brigadier General Hossein Mohebbi of Iran's Islamic Revolutionary Guard Corps warned of "heavy blows to US vital interests" if Iran's infrastructure is threatened.2345

Despite the sanctions, oil prices fell over US$2 a barrel, indicating market skepticism about the effectiveness of the measures. Bessent noted that countries continuing to trade with Iran risk exclusion from the dollar-based financial system, but he refrained from identifying specific targets, stating, "Why would I want to blow up the global financial system?" This approach aims to avoid immediate penalties while allowing time for compliance.

As tensions rise, Pakistani army chief Asim Munir visited Iran, advocating for a peaceful resolution. Iranian President Masoud Pezeshkian remarked, "The United States must correct its tone and approach in interacting with Iran..." indicating a desire for diplomatic engagement amidst escalating sanctions.6

Key Insight
“The Treasury's new sanctions target 60 individuals, entities and vessels but omit Chinese financial institutions, a move Bessent defended by saying, "Why would I want to blow up the global financial system?" Meanwhile, oil prices fell more than $2 a barrel despite the threat of supply disruptions.”
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CuriousCats studied:
1
CNACNA
“HONG KONG, Aug 25 : The U.S. dollar struggled to hold onto gains against major peers on Tuesday, as investors parsed Washington's expanded Iran-related sanctions and renewed efforts to ease pressure on longer-dated Treasury yields.”
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2
CNACNA
“CAIRO: Iran promised to retaliate against expanded that the Americans said would cut off Iran's economic lifeline, with Tehran expressing confidence that major trading partners would resist Washington's pressure campaign.”
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