The world's crises are no longer parallel — they are load-bearing walls in the same structure. The Iran war, launched by the US and Israel in late February, has metastasized beyond its original theatre into Hamas, Hezbollah, six Iranian militias, the Houthis, and now north Africa. Trump's own envoy Tom Barrack, speaking in Doha, described the cascading consequences as turning "camp fires into forest fires" and admitted that 23 US-backed regime changes across the greater Middle East "none of them have worked." He stopped short of naming Iran as the 24th. The economic damage is no longer hypothetical. Brent crude hit $117 per barrel — 50% above prewar levels — less than a fortnight before the midterms. The Strait of Hormuz, open to commercial shipping for centuries, is now an Iranian bargaining chip. Saudi Arabia's GDP is forecast by the IMF to contract 3.3%, a five-percentage-point downgrade from the 1.7% growth projected in July. Riyadh raised its 2026 budget deficit projection to $65.3bn, 48% above original forecasts. Worldwide inflation has been pushed to 4%. Every pillar of Vision 2030 — open sea lanes, functioning airports, a US security umbrella — has failed simultaneously. The strategic returns are worse than zero. Ali Larijani, the Iranian with the most strategic acumen, was killed on the first day. Hardliners around new supreme leader Mojtaba Khamenei are more entrenched. Public debate inside Iran now leans toward ending the fatwa on possessing nuclear weapons. The IRGC has adjusted its defence doctrine to allow preemptive strikes globally, not just against US bases. Oman's foreign minister, who mediated February's Iran-US talks, confirmed a nuclear deal had been within reach before bombing began. Trump's domestic position has collapsed in parallel. Facing plunging polls and incapable of self-criticism, he deflected blame for energy prices onto a second theatre — Ukraine's attacks on Russian oil refineries — unleashing long-suppressed hostility toward Zelenskyy. He announced a fictional 60-day "energy truce" neither side had agreed to, then revealed a Russian diesel deal too small to move prices. The Starlink episode — where Ukrainian forces lost military-grade access, with the administration offering contradictory explanations about whether Musk freelanced or had White House permission — exposed the absurdity of a private company determining the conduct of a putative US ally. The intertwining of these wars has handed Russia a strategic opening. Putin dispatched Lavrov to Tehran on 19 October to broker Iran terms Trump could tolerate, while proposing a three-way China-Russia-US summit at an already scheduled Shenzhen meeting on 18 November. The architecture is clear: Russia positions itself as the indispensable mediator, extracting concessions on Ukraine by packaging them with Iran relief. India's Jaishankar captured the systemic reality: "War anywhere threatens peace everywhere." Charles Kupchan's diagnosis frames the deeper current: power is diffusing across the international system, the digital era is eroding the social contract of the industrial era, and the resulting socioeconomic disruption is destabilizing politics within and between nations. Trump is a symptom of this tectonic shift, but as Kupchan and this article's evidence make clear, a capricious US president's capacity for disruptive damage has grown tenfold precisely because of that interconnection. Dean Acheson's rule — that 80% of foreign policy is managing domestic capacity to have a policy — has been violated completely. The question now is whether any diplomatic architecture can reassemble itself before the pressure cooker detonates further. Barrack's Rubik's Cube metaphor is apt but incomplete: this is a Rubik's Cube where each turn also changes the rules of subsequent turns. Karl Rove warned that undisciplined White House messaging puts GOP candidates at risk. The deeper risk is that the intertwining of Iran, Ukraine, energy markets, and great-power competition has created a system where no single crisis can be resolved in isolation — and the actor with the most power to coordinate is the one most actively preventing coordination.