US Unleashes Financial Siege on Iran

The US Treasury secretary, Scott Bessent, warned that Washington will cut every economic link with Iran, branding the move the 'greatest financial offensive ever'. The policy means all US‑Iran transactions will be halted, and any third‑country that continues to finance Tehran will face secondary sanctions and diplomatic isolation. The announcement follows a series of unresolved nuclear talks and recent Iranian support for proxy groups. By targeting banks, oil exports and trade routes, the US hopes to squeeze Iran’s revenue streams and force a change in behaviour. The threat of worldwide financial exclusion marks a sharp escalation in the long‑running US‑Iran rivalry.

Companies with exposure to Iranian markets must audit contracts now, while banks should tighten compliance checks to avoid secondary sanctions. Policymakers will need to weigh the ripple effects on global trade and energy prices.

The crackdown threatens to reshape the global financial network, forcing allies and trading partners to choose between lucrative Iranian business and access to the US financial system. Energy markets could feel pressure, and the move signals a broader US strategy to use economics as a weapon in geopolitical disputes.