US, Iran engaged in tanker war: Where is the months-long conflict headed?

Despite US sanctions, Iran continues to funnel $9 billion annually through American banks, revealing a significant loophole in Washington's financial blockade. Through foreign institutions with correspondent relationships to US banks, Iranian funds can indirectly reach American banks via front companies and currency exchanges. This covert method accounts for about $9 billion in Iranian funds that passed through American banks in 2024, according to a Wall Street Journal investigation.

Iran's oil exports, crucial to its economy, have been nearly halted by the US blockade, yet the nation retains millions of barrels of crude in floating storage, particularly in waters near Malaysia. China remains Iran's primary oil buyer, importing over 500,000 barrels daily in August. Iranian crude can be transferred via ship-to-ship exchanges in international waters, complicating efforts to trace its origin.

Sanctioned tankers unload at other vessels, which then transport the crude to China, where it can be recorded under a different origin.

Iran is increasingly bypassing the US dollar in its trade with China, settling transactions in Chinese yuan. This tactic allows Tehran to circumvent parts of the US-controlled financial system and use the yuan for purchasing Chinese goods and services or bartering oil for Chinese infrastructure investments in Iran. Cryptocurrency has also emerged as a tool for Tehran, with Iran reportedly using billions of dollars' worth for trade and purchasing weapons and commodities.

However, enforcement against crypto transactions remains challenging due to their decentralized nature and difficulty in tracing.

Despite its attempts to circumvent the dollar, Iran still requires access to US currency for imports, weapon purchases, and funding regional allies. Consequently, Tehran has established a network of shell companies and exchange houses in financial centers like Hong Kong and Dubai. These entities can move Iranian earnings into dollars, euros, and UAE dirhams while concealing their ties to Tehran.

While US sanctions are increasingly targeting individuals and entities involved in this network, dismantling the entire system remains difficult. The US financial infrastructure, crucial for global trade, also provides Iran with indirect pathways to access the dollar system. Iran's financial apparatus is also instrumental in funding its weapons industry, as Iranian buyers source materials for military equipment from Chinese companies.

This reliance on foreign suppliers, some of which may operate outside the US sanctions net, highlights the complex interplay between Iran's financial strategies and its military ambitions.