US Treasury to Sanction Major Bank on September 14 in Escalation of Iran Conflict

US Treasury Secretary Scott Bessent announced that the United States will impose sweeping sanctions on a major, unnamed financial institution on Monday, September 14, 2026. This move represents a significant escalation in the ongoing economic warfare accompanying the seven-month-old military conflict between the United States and Iran. Speaking on the media outlet Real America's Voice, Bessent warned that the upcoming measures are designed to make any continued financial dealings with the Iranian government an extinction-level event for the targeted entities and their leadership.

The announcement coincides with intense military clashes in the Middle East and a sharp rise in global energy prices, with Brent crude oil surging past the 100 dollar per barrel threshold. President Donald Trump, speaking ahead of the Republican National Midterm Convention in Dallas, Texas, acknowledged the domestic economic strain caused by the conflict but predicted that the war would end immediately after the November midterm elections, claiming that Tehran is holding out in a desperate bid to influence the vote.

Treasury Secretary Scott Bessent explained that the upcoming sanctions against the unnamed large bank were originally scheduled to be unveiled on Friday, September 11, 2026. However, the administration chose to postpone the announcement to avoid conflicting with ceremonies commemorating the 25th anniversary of the September 11, 2001, terrorist attacks. Bessent emphasized that the United States is prepared to systematically isolate any global financial institution that continues to facilitate transactions for the Iranian government.

"We are just going to continue with this process until everyone stops dealing with this regime," Bessent stated during his television appearance. He added a direct warning to international corporations and executives: "We will make it so unprofitable that if you want to risk an extinction-level event for your company or for your person, your personal finances, then have at it. But we are coming for you." This aggressive posture highlights the administration's reliance on secondary sanctions, which penalize foreign firms doing business with Iran by cutting them off from the US financial system.

The upcoming action against the unnamed bank builds upon a broader pressure campaign that the Trump administration escalated in August 2026 under a program designated as Operation Economic Outcast. Through this initiative, the US Treasury has already blacklisted nearly 60 entities, individuals, and maritime vessels. The program expanded the scope of secondary sanctions to target key sectors of the Iranian economy, including shipping, aviation, technology, gold, and digital assets, in an effort to completely choke off Tehran's access to international capital.

Since the outbreak of the military conflict in February 2026, when joint US and Israeli forces launched attacks on Iran, the United States has maintained a strict naval blockade on Iranian ports. US forces have also targeted Iranian oil tankers at sea in response to attacks on warships and commercial vessels. The economic measures have systematically targeted Iran's oil exports, shipping networks, weapons procurement channels, financial intermediaries, and digital asset exchanges, creating severe operational hurdles for the regime.

The economic escalation comes amid a sharp increase in direct military confrontations throughout the region. On Tuesday, September 8, 2026, the US military reported that it had attacked and destroyed five oil tankers in the Gulf of Oman and the northern Gulf, alleging the vessels had direct ties to Iran's Islamic Revolutionary Guard Corps. In retaliation, the Revolutionary Guard claimed its naval forces attacked two US Navy destroyers and eight oil tankers in the Strait of Hormuz, asserting they caused heavy damage. Although the US Central Command denied that any of its warships were struck, the exchange highlighted the extreme volatility of the vital shipping corridor.

The conflict has also spilled over into neighboring countries. The Revolutionary Guard launched ballistic missiles targeting US military maintenance facilities, hangars, and aircraft at the Muwaffaq Salti Air Base in Jordan. While Jordanian armed forces reported intercepting 20 of the incoming missiles, sources familiar with the matter later confirmed to CBS News that several US fighter jets sustained damage. Specifically, one A-10 Thunderbolt aircraft was struck and was missing a wing, while approximately eight F-15 fighter jets sustained light damage. Concurrently, Iran-backed Houthi forces in Yemen launched missile and drone strikes against southwestern Saudi Arabia, causing fires at multiple oil facilities in Khamis Mushait, Abha, and Jazan.

The protracted conflict has severely impacted President Trump's domestic standing, driving down his approval ratings and creating anxiety within the Republican Party as the November 3, 2026, midterm elections approach. Initially, the president had predicted that the war would last only a matter of weeks, but it has now entered its seventh month. The resulting surge in fuel and grocery prices has led to open dissatisfaction among voters and prompted some vulnerable Republican lawmakers, including Senators Susan Collins of Maine and Dan Sullivan of Alaska, to remain at home campaigning rather than attending the national midterm convention in Dallas.

Addressing reporters before departing for the convention, Trump sought to frame the economic pain as a necessary sacrifice to prevent Tehran from acquiring nuclear weapons. "I think the war's going to end immediately after the election because they can't hold out any longer," Trump said, accusing Iranian leaders of trying to influence the vote to secure a weaker US administration. He acknowledged the public frustration, noting that citizens frequently complain to him about rising gasoline prices, but insisted that oil prices would tumble downward as soon as the war is won.

The immediate focus now turns to Monday, September 14, 2026, when the Treasury Department is scheduled to formally identify the sanctioned financial institution and outline the specific penalties. This designation will test the efficacy of the administration's secondary sanctions framework and could trigger further retaliatory actions from Iran or its regional allies. Meanwhile, military officials continue to assess the damage at the Muwaffaq Salti Air Base in Jordan, and energy markets remain highly sensitive to any further disruptions in the Strait of Hormuz.