Bessent Juggles G20 Strains and Iran Sanctions Push

U.S. Treasury Secretary Scott Bessent is hosting G20 finance ministers and central bank governors in Asheville, North Carolina, with an agenda centered on shrinking global trade imbalances, boosting growth and pressing partners over economic ties to Iran. The talks unfold against a backdrop of uncertainty over future U.S. tariff moves and an ongoing trade dispute with Canada, while high energy and commodity prices linked to the Iran war add to the challenge.

These overlapping pressures give the Asheville meetings an unusually broad scope, forcing officials to weigh trade, geopolitics and market stability simultaneously. Bessent is using the gathering to seek cooperation from diverse partners on both trade and sanctions policy while addressing concerns about U.S. fiscal sustainability and debt dynamics.

Rising U.S. borrowing costs form a key concern at the meetings. Yields on 30-year U.S. Treasury debt have climbed to their highest levels in 19 years this month, focusing attention on the resilience of long-term government bond markets and the implications for global financial conditions.

In response, the Treasury surprised markets by announcing that it would double the size of scheduled buybacks of longer-dated Treasuries to $4 billion per operation. The move aims to address stress in this segment of the market and signals a more active approach to managing the Treasury curve at a time when investors are sensitive to shifts in supply and demand for long-dated securities.

The enlarged buyback program sits alongside other recent Treasury interventions in foreign exchange and emerging markets. On August 1, the United States and Japan conducted a joint intervention to support the yen, underscoring coordination between the two countries in response to currency pressures.

Earlier, in October 2025, the Treasury had also purchased Argentine pesos, illustrating a willingness to act in specific markets when conditions warrant. These actions, taken together with the Asheville agenda, highlight how U.S. policy makers are balancing domestic bond concerns with cross-border stability issues.

Parallel to the G20 diplomacy, the Treasury has launched a sanctions campaign called “Operation Economic Outcast” aimed at institutions that facilitate Iran’s access to dollar financing. As an early step, Treasury has proposed a rule that would cut U.S. dollar correspondent banking access for Banque Misr’s operations in the United Arab Emirates.

Some reports indicate the proposed action would affect five UAE branches, which Treasury has described as a critical node in Iran’s access to dollars. The proposal cites about $1.8 billion in transactions processed for roughly 103 companies potentially linked to Iran between January 2024 and June 2026, and it will proceed through a notice-and-comment process with a 30-day public comment period.

Treasury officials have warned that countries and institutions risk secondary U.S. sanctions if they continue Iran-related business that supports Tehran’s dollar financing. The timing of the proposed Banque Misr curbs alongside the Asheville meetings underscores how sanctions enforcement and financial diplomacy are being pursued in tandem.