Iran vows 'devastating' response as U.S. threatens maximum sanctions to topple regime

The United States is preparing to unleash what it calls the harshest economic penalties ever imposed on a single nation, with an explicit goal: the collapse of Iran's government. Treasury Secretary Scott Bessent announced the plan on Thursday, promising full details on Monday, while President Trump warned that any country offering Iran a financial lifeline would face American consequences. The message was unmistakable—this is not negotiation. This is maximum pressure.

Iran's response came swiftly and in kind. Major General Ali Abdollahi, chief of staff of the Iranian Armed Forces, declared that Tehran would meet the threat with what he called "crushing, punishing and devastating" replies. He specified the scope: across land, sea, air, air defense systems, and cyberspace. The language was not metaphorical. Iran's parliament speaker Mohammad Baqer Qalibaf, who has led mediated talks with the United States, suggested Washington had concluded it could not win through direct military confrontation and was pivoting to economic strangulation instead. He called the approach "economic and cognitive warfare."

The stakes are global. Oil prices climbed to their highest level in three weeks on Thursday, driven by anxiety over what a deepening conflict means for energy supplies flowing through the Strait of Hormuz, a waterway that carried roughly one-fifth of all traded oil before the fighting began in February. The war has already killed thousands and displaced millions of barrels from Middle Eastern markets. Two ceasefire agreements—one in April, another in June—collapsed within weeks. Now, with the U.S. announcing a naval blockade combined with sweeping financial sanctions, the prospect of a longer, more punishing conflict looms.

Bessent framed the sanctions as a tool to prevent military escalation, not provoke it. "If we are doing the maximum economic pressure, then that means that likely there will not be a large-scale kinetic restart," he told CNBC, using military terminology for armed conflict. He described the strategy as a "one-two punch"—the blockade already in place since April (paused briefly in June, then reimposed in July) combined with sanctions he promised would be "the toughest in history." His message to allies and adversaries alike was blunt: "It is time for our allies and the rest of the world to make a decision."

Iran's foreign ministry rejected the entire premise. The government called U.S. sanctions "economic terrorism" and insisted they would not shake the Iranian people's resolve to defend their nation's independence. This language echoes a deeper historical reality: Iran has endured nearly continuous economic sanctions for almost fifty years, since the Islamic Revolution of 1979. The country has learned to absorb punishment.

The complication is China. Beijing purchases more than eighty percent of Iran's shipped oil, according to 2025 data. Pressing China to abandon that trade risks American retaliation against a nation that supplies vital rare-earth minerals to U.S. industry and exports heavily to American markets. When asked directly if the U.S. would target China for doing business with Iran, Bessent demurred, saying some conversations are best held privately. He did note that China depends on Gulf energy for half its supply, suggesting that Beijing has its own interest in stability. China's embassy responded by calling for political and diplomatic solutions, not sanctions and pressure.

The market is already responding. Iranian crude offers to Chinese buyers have declined, and prices have jumped as the reimposed blockade on Iranian ports—in effect since mid-July—has cut Tehran's shipments. The conflict that began six months ago shows no signs of resolution. Two failed ceasefires, thousands dead, and now the prospect of the most severe economic assault in modern history. Trump faces domestic pressure to end the war; high fuel prices are dragging his approval ratings and threatening his party's control of Congress in November midterm elections. But the path to resolution remains unclear, and the rhetoric from both sides suggests the opposite direction.