During a White House briefing, US Treasury Secretary Scott Bessent revealed that the United States has sent warning letters to two Chinese banks concerning the risk of secondary sanctions. The letters were issued due to concerns over alleged Iranian transactions that could involve these banks. Bessent emphasized that if it is proven that Iranian money flows through their accounts, the banks could face significant repercussions. This move underscores the US government's ongoing vigilance regarding financial dealings with Iran, particularly in light of existing sanctions aimed at curbing the country's financial activities. The situation highlights the complexities of international banking and the potential for sanctions to impact global financial systems.