Five days into the US-Israeli military campaign against Iran, this assessment sets out a series of observations about the escalation dynamics now visible in the conflict. These are not predictions. They are observations about structure: about the mechanisms through which military campaigns conducted without clear political endpoints tend to exceed the objectives that launched them, and about why the current conflict is particularly susceptible to that pattern.

An instructive practical framework is the Weinberger-Powell doctrine, which emerged from the United States’ experience in Vietnam as a set of conditions that military force should satisfy before commitment: clearly defined political objectives, a credible plan for termination, and a clear understanding of the political order that follows military success. The 1991 Gulf War remains the clearest example of those conditions being met. The objective was specific and limited: the restoration of Kuwaiti sovereignty. The force was proportionate, and George H.W. Bush’s decision to stop at Kuwait’s border and withdraw reflected a deliberate choice to keep military logic subordinate to political direction throughout. The campaign ended with Kuwait liberated, Iraqi forces expelled, and US forces home within months. It was authorised by both the UN Security Council and the US Congress, producing the political durability that made controlled termination possible.

The current campaign satisfies none of those conditions, and the stated justifications make this unusually visible. In the days following the 28 February strikes, the Trump administration offered at least six distinct rationales: eliminating imminent threats to US forces and allies; preventing Iran from developing long-range missiles capable of reaching the American homeland; denying Iran a nuclear weapon; pre-empting Iranian strikes that Rubio said would have followed an Israeli attack regardless; responding to what Trump later reframed as an Iranian first-strike that never materialised; and regime change. Each justification carries different implications for what military success would look like and when operations could end. Several are in direct contradiction. Trump had declared Iran’s nuclear programme “totally obliterated” in June 2025; eight months later it remained the central casus belli, despite Rubio simultaneously confirming Iran was not enriching uranium. The Pentagon’s own Defence Intelligence Agency assessed in 2025 that Iran was at least a decade from producing intercontinental ballistic missiles capable of reaching the US, directly contradicting Trump’s public claims. Hours before the strikes began, the Omani foreign minister stated that diplomatic negotiations had reached a “breakthrough” and a deal was “within reach.” The objectives of the United States government, the Israeli government, and the operational logic of the US military are not identical. The overall picture is not of a campaign launched towards a defined objective, but of justifications assembled around a decision already taken. 

What makes the present situation unstable is not any single development but the number of escalation mechanisms that have activated simultaneously. Several of the processes most associated with uncontrolled conflict expansion are already visible: alliance commitments that risk drawing additional states into the conflict; nuclear deterrence relationships operating under compressed timelines; energy chokepoints whose disruption has global economic consequences; proxy networks capable of widening the battlefield without formal declarations of war; and financial mechanisms, such as maritime insurance withdrawal, that can close strategic corridors faster than military action. Each of these mechanisms operates according to its own internal logic. When they are triggered concurrently, they interact in ways that are difficult for political leadership to manage in real time. The result is a strategic environment in which escalation does not depend primarily on deliberate decisions to widen the war, but on the cumulative pressure created by multiple systems moving at once.

This is the condition the July Crisis of 1914 illuminates most precisely. The central lesson of that crisis is not about alliance structures or mobilisation timetables. It concerns the relationship between political objectives and military logic: specifically, what happens when the former are unclear or multiple and the latter is already in motion. Austria-Hungary entered the crisis with a limited objective: to punish Serbia for the assassination of Archduke Franz Ferdinand and, in doing so, reassert its authority over the Balkans before Habsburg prestige deteriorated further. The mechanisms it set in motion, including alliance obligations, mobilisation cascades, and systematic miscalculation about the responses of other actors, produced outcomes bearing little relationship to that intent. Within six weeks a bilateral punitive campaign had become a continental war involving all the major European powers. By 1918 the Austro-Hungarian Empire had ceased to exist entirely, dissolved into successor states by the peace settlement it had sought to avoid through action in the summer of 1914. The question the July Crisis poses is not who desired a general European war, but which mechanisms were capable of producing one faster than political actors could intervene to prevent it.

That question is directly relevant here, and what makes it particularly acute is geography. The war is unfolding across what Nicholas Spykman described as the Eurasian Rimland: the arc of states stretching from the eastern Mediterranean through the Persian Gulf and South Asia to East Asia where land and sea power intersect, trade routes concentrate, and the mechanisms of great power competition are most densely active. The Heartland, the continental interior of Eurasia encompassing Russia, Central Asia, and the core of China, is comparatively self-sufficient, landlocked, and difficult for external powers to penetrate. The Rimland, by contrast, is structurally exposed and strategically decisive. Spykman asserted that whoever can dominate or destabilise that arc shapes the balance of power across the wider international system. The current conflict (and its consequence) is unfolding almost entirely along this belt. 

Recent developments illustrate how quickly pressure can propagate across it, including the reported sinking of the IRIS Dena, Iran’s most capable warship, by a US submarine off the Sri Lankan coast, the first US submarine kill since WWII, and the growing vulnerability of China’s maritime energy lifelines. The dependence of energy-importing economies further east on Gulf supply routes further amplifies the system’s sensitivity to disruption. Japan sources roughly 95 percent of its crude from the Middle East. South Korea draws around 70 percent of its crude and 20 percent of its LNG from the same corridor, while Taiwan still imports approximately a third of its LNG from Qatar alone, leaving its semiconductor sector exposed to sustained disruption. 

The density of interconnected mechanisms along the Rimland means that pressure applied at one point of this arc can transmit rapidly across others: a dynamic Spykman’s framework anticipated and which the present conflict is now beginning to reveal.

On 4 March NATO air defences intercepted an Iranian ballistic missile heading toward Turkish airspace. In formal terms Article 5’s threshold has been met; the political decision whether to treat it as such has not been taken. Turkey is simultaneously a NATO member whose systems are intercepting Iranian munitions and a government that has declared its territory unavailable for operations against Iran, a contradiction that will require resolution. If Article 5 formally activates, a bilateral US-Israeli campaign becomes a 32-member collective defence operation with escalation implications that extend well beyond the immediate theatre.

Pakistan presents the most complex single actor in the conflict. It has publicly invoked its Strategic Mutual Defence Agreement with Saudi Arabia, signed September 2025, under which aggression against one party is treated as aggression against both, while simultaneously serving as the principal diplomatic intermediary between Tehran and Riyadh, conveying Saudi assurances to Iran and claiming credit for moderating Iranian strikes on the kingdom. It is nuclear guarantor and back-channel simultaneously, a dual role that is structurally unstable if the diplomatic channel fails. Pakistan is simultaneously engaged in open military confrontation with the Taliban on its Afghan border, managing sectarian unrest in Gilgit-Baltistan that has left at least 20 pro Iran protesters dead, and coordinating the evacuation of approximately 35,000 nationals stranded in Iran. No nuclear-armed state in the current environment is operating under comparable concurrent pressure across this many distinct crisis fronts.

The India-Pakistan dimension compounds this. The ceasefire of May 2025, obstinately stabilised through direct US intervention, now operates without that external backstop, which is fully consumed by Iran. Both states possess nuclear arsenals estimated at roughly 160-170 warheads. Pakistan’s doctrine explicitly reserves tactical nuclear use to offset Indian conventional superiority and carries no no-first-use commitment. This doctrinal asymmetry means that incidents that might remain limited elsewhere, including militant attacks, miscalculated airstrikes, and Line of Control exchanges, carry substantially higher escalation potential between these two states than between most other nuclear-armed pairs.

China’s position warrants particular attention. Approximately forty percent of Chinese oil imports transit the Strait of Hormuz; China purchased more than eighty percent of Iranian oil exports in 2025. The closure of Hormuz has been achieved not through physical interdiction but through the withdrawal of maritime insurance markets, a mechanism that bypasses both the military tools and the sanctions architecture that external powers would normally deploy to manage a maritime crisis, and that operates faster than either. Energy analysis from Goldman Sachs and Wood Mackenzie identifies a two-week closure threshold, falling around 14 March, at which oil prices reach $100-120 per barrel and global recession risk becomes material. China has dispatched a diplomatic envoy, currently the only unambiguously de-escalatory signal in the international environment. If the closure persists, Beijing faces a structural binary: accept continued US naval leverage over its energy supply, or respond materially. The forms that response might take, including arms transfers, naval escorts, and economic leverage, each carry distinct escalation implications in a situation already under pressure from multiple directions.