US unveils sweeping Iran sanctions, delays toughest measures

In late August 2026, the United States announced a broad new round of sanctions against Iran, targeting its oil trade and economic partners. Treasury Secretary Bessent unveiled the measures, which include actions against dozens of Chinese firms and the oil trader Wellbred for their links to Iranian oil. The move is part of what US officials call an 'economic D-Day' strategy to isolate Iran, though the administration held back some of the most punishing options for now.

Bessent described the sanctions as an escalation of economic pressure, and KT McFarland, a former US official, said the measures raise the economic stakes for Iran. The decision to delay the toughest penalties suggests the US is keeping those options in reserve, while signaling continued pressure on Tehran's economy.