Copper sinks as war fears hit metals

Copper and other industrial metals fell on Wednesday after US President Donald Trump renewed threats to strike Iran’s power plants and other civilian infrastructure if talks fail to halt a war that has entered its second month, adding another layer of risk to commodity markets already strained by conflict in the Gulf. Bloomberg reported the move across metals markets on April 2, while Reuters and AP reporting over the past week showed Trump had repeatedly tied any pause in attacks to diplomacy and warned of further action if Tehran did not yield.

The drop in copper reflected a broader retreat in cyclical assets as traders reassessed demand, supply chains and geopolitical exposure. Industrial metals are highly sensitive to changes in manufacturing expectations, freight conditions and power costs, and the latest rhetoric from Washington sharpened concerns that a deeper confrontation with Iran could disrupt shipping routes, energy supplies and regional industrial activity. Markets have also been watching the Strait of Hormuz, a narrow waterway central to oil and commodity flows, after Trump warned Iran to reopen it or face attacks on oil facilities, power plants and desalination infrastructure.

Copper’s weakness stood out because the metal is often treated as a barometer of global industrial health. When geopolitical shocks raise the prospect of slower factory activity or more expensive energy, traders tend to mark down growth-linked metals even when physical supply remains tight. Reuters’ wider reporting on commodity markets this year has shown how quickly sentiment can swing when macroeconomic fears collide with supply disruptions, and that pattern appears to be playing out again as investors weigh war risk against the still-fragile outlook for manufacturing and construction.

Trump’s messaging has added to volatility because it has alternated between threats and pauses. On March 26, he said attacks on Iran’s energy infrastructure would be paused for 10 days while negotiations were said to be going well. By March 30, he was again threatening retaliation against oil facilities, power plants and other key assets if Iran did not comply with US demands over Gulf shipping and the wider conflict. AP reported that financial market turbulence had already influenced the White House calculus, with Trump delaying threatened strikes after market losses and surging oil prices unsettled investors.

That policy whiplash matters for metals because the conflict is not only a demand story. It is also a supply and logistics story, particularly for aluminium and other energy-intensive materials produced in the Gulf. Reuters reported this week that aluminium prices jumped after Iranian attacks hit major Middle East smelting operations, including damage assessments at Aluminium Bahrain and Emirates Global Aluminium. Gulf smelters account for a meaningful share of global aluminium supply, and any extended disruption to power, transport or feedstock availability could ripple through industrial supply chains well beyond the region.

For copper, the immediate risk is less about mines in the Gulf than about the macro chain reaction. Higher oil prices lift transport and smelting costs, tighter shipping conditions can delay deliveries, and a stronger dollar during periods of market stress can weigh on dollar-priced commodities. Reuters reported that broader market nerves over a possible escalation in the Middle East had already hit materials stocks in Canada, with copper and gold exposed to both commodity price swings and currency pressure.

The political backdrop remains highly unstable. AP reported that Trump has floated increasingly expansive options, including action around Iran’s Kharg Island, while security experts warned that such steps could endanger US forces and deepen the war rather than shorten it. At the same time, there has been confusion over whether any direct talks are truly under way, with Trump claiming contact with senior Iranian figures and Iranian officials publicly denying that direct negotiations are taking place. That gap between political claims and diplomatic reality has made it harder for traders to price a clear path forward.