Great Powers Export Constraints to Allies

The defining move of the week was not a victory but a transfer of cost. The United States, nearing six months of war with Iran and facing thinner missile stocks, promised an “economic D-Day” built on sanctions against any country sustaining Tehran. Russia, unable to end the war in Ukraine on the ground, exploited a global shortage of Patriot interceptors to send ballistic missiles into cities. Washington then imposed 50 percent tariffs on Canadian goods after demanding concessions Ottawa said would restrict its sovereignty. Powerful states are not escaping their constraints. They are making other countries carry them.

The Iran campaign shows the mechanism most clearly. US forces can escort 15 to 20 tankers a night through a covert channel near Oman, but normal Hormuz traffic has not returned. The Soufan Center notes that Iranian banks are already largely excluded from global finance, which limits the additional pain another sanctions package can create. Washington’s leverage therefore depends on threatening buyers, especially in China and the Gulf. Yet Xi Jinping is expected in Washington in September, and Gulf governments have already endured Iranian attacks. The sanction has to look universal while making room for the partners the United States cannot afford to lose.

Canada refused that bargain. After talks collapsed, Mark Carney said the old relationship with the United States would not return and promised dollar-for-dollar retaliation against duties on roughly $20 billion to $28 billion of goods. Nelson Wiseman of the University of Toronto described Canada as the central test of whether a middle power can resist economic coercion. The dispute matters because it reaches products protected by the USMCA and counties whose factories depend on cross-border supply chains. American economic power is being used to extract insulation from a problem of its own making, while the immediate costs fall on integrated firms and consumers on both sides.

Ukraine is paying for a military constraint created elsewhere. Russian barrages killed at least 16 around Kyiv and another 16 at a shopping centre in Kryvyi Rih. Zelensky says he needs 300 to 360 Patriot missiles before winter and would accept 5 percent of US reserves simply to keep the country functioning. The Iran war has consumed interceptors that Kyiv cannot replace, while Russia has increased ballistic launches and deployed faster drones. Europe arrived in Kyiv for Independence Day with loans, aid and missile-production plans. Production lead times, not political sympathy, decide whether any of it can stop the next strike.

Kyiv is exporting pressure in return. Its long-range drones hit Russian refineries, an oil terminal, the electricity gateway to occupied Crimea, aircraft and air-defence systems. The campaign has contributed to fuel shortages and forces Moscow to defend a much larger area. It has also widened toward logistics and retail warehouses, with more Russian civilians reported killed. Offensive autonomy can compensate for scarce allied missiles only imperfectly: it may reduce future Russian capacity, but it cannot intercept a ballistic weapon tonight.

Europe’s domestic systems are absorbing the same wars. Iranian-linked hackers shut a British power plant for four days. Germany found an explosive drone at Leipzig/Halle airport, then planned a €12 billion long-range arsenal while its car industry shed 42,300 jobs. France faced Russian-linked operations against presidential candidates as drought cut water to more than 40,000 people and placed 550,000 supplies at risk. Security spending is rising inside economies already paying through energy, transport and climate disruption.

The Mecca Joint Defence Agreement is the regional answer to this insecurity. Saudi Arabia, Turkey and Pakistan promised to treat an attack on one as an attack on all. Kristian Coates Ulrichsen of Rice University traces the pact to a decade of doubts about American reliability; IISS sees the first of several realignments after the Iran war. The agreement combines Saudi capital, Turkish industry and Pakistan’s nuclear status, but its practical obligations remain vague. That may be deliberate. It creates insurance without forcing members to choose in advance between Washington, Tehran and Israel.

Germany and France face a political version of the same choice. Alice Weidel said an AfD government would leave the euro and Schengen as her party approached a possible state majority. French candidates traded claims of Russian interference while the fiscal watchdog warned that a year without a 2027 budget could worsen the deficit by at least 0.5 percent of GDP. External pressure works best where governing coalitions are already weak. Moscow does not need to create every division if energy costs, industrial decline and electoral distrust make those divisions easier to weaponise.

No single alliance is replacing the old order. Europe still needs American air defence, Gulf states still operate American weapons and Canada still sends most exports south. The change is that dependence now comes with an explicit contingency plan. Watch which firms Washington sanctions over Iran, whether Canadian retaliation holds, actual Patriot deliveries, joint structures under the Mecca pact and the protection of European infrastructure. The next phase will be decided by whether allies can build spare capacity faster than great powers can turn scarcity into leverage.