CASE STUDY
Strategic Vulnerability, Industrial Response, and Implications for Singapore
| DateMarch 2026 | ClassificationAcademic Use | RegionIndo-Pacific / Global | DomainDefence Economics |
This case study examines the strategic consequences of cumulative US precision munitions depletion across three conflict theatres (Ukraine 2022–, Gaza 2023–, Iran 2026), with particular attention to defence industrial base constraints, policy responses, and second-order implications for Singapore’s defence posture and supply chain resilience.
1. Case Study: Cumulative Depletion of US Munitions Stockpiles
1.1 Background and Timeline
The United States military has experienced an accelerating drawdown of conventional munitions stockpiles across three distinct but interconnected conflict phases since 2022. What began as a policy of supplying allied forces abroad has escalated into direct US military engagement, compounding the rate of depletion and exposing structural weaknesses in the American defence industrial base.
| Period | Event | Key Systems Consumed | Estimated Impact |
| 2022–2024 | Ukraine Security Assistance | 155mm artillery, HIMARS, Stinger, Javelin | Billions USD in stockpile drawdown |
| 2023–2025 | Gaza / Middle East Operations | Precision-guided munitions, air-to-ground | Accelerated PGM depletion |
| Feb 28, 2026 | US Strikes on Iran | Tomahawk cruise missiles, JASSM, one-way drones | Long-range PGM stocks critically stressed |
| Mar 6, 2026 | White House Industry Meeting | — | Emergency production escalation initiated |
1.2 The Iran Strikes: A Threshold Moment
The February 28, 2026 strikes on Iran marked a qualitative escalation in the munitions depletion problem. Unlike the proxy-supply model applied to Ukraine, the US directly deployed Tomahawk cruise missiles, F-35 stealth fighters, and low-cost one-way attack drones in the Iran operation. This direct consumption of long-range precision munitions — systems far more expensive and slower to manufacture than ground artillery rounds — exposed a capacity gap that had been accumulating for years.
Tomahawk production context: Raytheon’s current Pentagon contract targets 57 units in 2026 at USD 1.3 million each. A new agreement aims for eventual annual production of 1,000 units — a 17x scale-up that will require years to achieve.
1.3 The Production-Consumption Gap
At the heart of this crisis is a structural mismatch between peacetime procurement rates and wartime consumption rates. The US defence industrial base was optimised for cost efficiency and shareholder returns during the post-Cold War era, not for surge production capacity.
| Munition Type | Peacetime Procurement Rate | Wartime Consumption Rate | Gap Assessment |
| Tomahawk Cruise Missile | ~57/year (2026 plan) | Hundreds per major operation | Critical — years to replenish |
| 155mm Artillery Shells | ~14,000/month (2022) | ~150,000–200,000/month (Ukraine rate) | Severe — ongoing scale-up |
| HIMARS Rockets (GMLRS) | ~5,000/year | ~10,000+/year consumed by Ukraine | Significant deficit |
| Anti-tank Missiles (Javelin) | ~1,000/year | ~8,500+ sent to Ukraine alone | Production tripled, still lagging |
1.4 Structural Causes
Financialisation of the Defence Industrial Base
Following the 1990s defence consolidation, the US prime contractors (Lockheed Martin, Raytheon/RTX, Northrop Grumman, L3Harris) became publicly traded companies subject to capital market pressures. Quarterly earnings expectations incentivised minimising surplus production capacity — inventory and idle capacity represent costs on the balance sheet.
- Raytheon in 2022–2023 paid out billions in dividends and buybacks even as stockpiles fell
- The Trump Executive Order (January 2026) explicitly targeted this dynamic, threatening contract termination for underperforming contractors prioritising shareholder returns
- Companies lack incentive to build ‘strategic reserve’ capacity without guaranteed government purchase commitments
Supply Chain Fragility
Precision munitions rely on complex supply chains involving specialised components — solid rocket motors, GPS chips, explosive fills, advanced seekers — many of which have single-source manufacturers. Scaling production is not simply a matter of adding factory shifts; it requires years of supplier development and qualification.
- Solid rocket motor capacity is a well-documented bottleneck for Tomahawk, SM-series, and GMLRS
- Semiconductor components for guidance systems face dual-use export controls complicating international supply
- Lead times for complex PGM components routinely run 18–36 months
Political Economy of Procurement
Congress appropriates defence budgets annually, making multi-year production commitments difficult. Contractors are reluctant to invest in capacity expansion without long-term purchase guarantees. The Pentagon’s 2026 supplemental budget request of approximately USD 50 billion represents an acknowledgement that the existing annual appropriations cycle is insufficient for wartime replenishment.
2. Strategic Outlook
The near-to-medium term outlook for US munitions stockpile recovery is constrained by industrial realities that cannot be resolved through political will alone. Three distinct time horizons are relevant.
2.1 Near-Term Outlook (2026–2027)
Immediate risk window: The period before significant production increases take effect represents a window of elevated strategic vulnerability for the US and its allies.
- The USD ~50 billion supplemental budget, if passed, will authorise procurement but cannot accelerate physical manufacturing constraints
- Tomahawk production cannot realistically reach 1,000/year before 2028–2029 given existing tooling and supply chain constraints
- Adversaries (China, Russia, Iran, North Korea) are acutely aware of this window and may calibrate risk-taking accordingly
- US strategic deterrence credibility is temporarily impaired for high-intensity scenarios requiring large PGM salvos
2.2 Medium-Term Outlook (2027–2030)
If Congressional appropriations follow through on the supplemental and multi-year procurement frameworks are established, production trajectories should improve substantially. However, several structural uncertainties persist.
- Multi-year contracts with rate-break pricing incentives may begin to shift contractor investment decisions
- The Pentagon’s underperformer list creates reputational and financial risk for contractors, potentially accelerating compliance
- Allied industrial contributions (Australia, Japan, South Korea) may partially substitute — particularly for artillery-class munitions
- Risk: Continued military operations may consume replenished stocks faster than production recovers
2.3 Long-Term Structural Outlook (2030+)
The deeper question is whether the US defence industrial base will structurally transform, or revert to peacetime efficiency optimisation once immediate pressures subside. Historical precedent (post-Gulf War, post-Afghanistan) suggests the latter is more likely absent sustained legislative and executive pressure.
- Defence industrial policy reform — including government-owned contractor-operated (GOCO) facilities — may be necessary for true surge capacity
- The shift toward lower-cost attritable munitions (loitering munitions, cheap cruise missiles) may partially mitigate high-value PGM dependency
- NATO allies face parallel depletion dynamics, limiting the coalition’s collective capacity to sustain high-intensity conflict
3. Policy Solutions and Recommendations
3.1 Near-Term Measures
Emergency Procurement and Supplemental Funding
The USD ~50 billion supplemental budget request is a necessary first step. To maximise effectiveness, the following design principles should govern its implementation:
- Multi-year procurement contracts (5–7 years) to provide manufacturers with investment certainty
- Advance procurement of long-lead components (rocket motors, seekers, warheads) ahead of final assembly contracts
- Prioritise Tomahawk, JASSM, SM-6, and GMLRS as highest-strategic-value systems
Allied Burden-Sharing
The US should accelerate technology transfer and co-production arrangements with Tier 1 allies to distribute production load. Australia’s commitment to Tomahawk and HIMARS procurement, Japan’s expansion of domestic missile production, and South Korea’s proven artillery manufacturing capacity represent genuine near-term capacity supplements.
3.2 Medium-Term Structural Reforms
Industrial Base Reform
Three structural reforms merit serious policy consideration:
- Government-Owned, Contractor-Operated (GOCO) facilities for critical munitions: This model, used successfully in World War II, insulates surge capacity from shareholder pressures while retaining private-sector management efficiency
- Strategic Munitions Reserve: An analogue to the Strategic Petroleum Reserve, maintaining a government-held buffer stock of critical precision munitions outside normal inventory accounting
- Regulatory reform of contractor capital allocation: Tying dividend and buyback approvals to performance against production targets and capacity investment benchmarks
Supply Chain Resilience
Critical component supply chains require direct government intervention:
- Subsidise expansion of solid rocket motor manufacturing capacity (currently constrained to a handful of US facilities)
- Establish allied supply chain agreements for dual-use components (semiconductors, energetic materials)
- Qualification of second-source suppliers for single-source components — an expensive but strategically necessary investment
3.3 Long-Term Strategic Posture
Portfolio Diversification toward Affordable Attritable Munitions
The over-reliance on expensive exquisite PGMs represents a strategic vulnerability that adversaries can exploit through attrition. A portfolio rebalancing toward lower-cost systems (loitering munitions at USD 50,000–200,000 per unit versus USD 1–2 million per Tomahawk) would improve stockpile depth at equivalent cost.
Institutional Reform
The annual appropriations cycle is fundamentally incompatible with industrial surge capacity requirements. Legislative reform establishing mandatory multi-year munitions procurement commitments — analogous to aircraft carrier procurement cycles — would provide the demand certainty needed to drive private sector investment.
4. Implications for Singapore
Singapore occupies a uniquely exposed position in this strategic landscape: as a major US defence equipment customer, a key Indo-Pacific maritime hub, and a small state with distinctive defence self-reliance imperatives, it faces compounding pressures from US stockpile depletion and broader supply chain disruptions.
4.1 Defence Procurement and Supply Chain Risk
Singapore is among the most significant per-capita defence spenders in Asia and operates an advanced, US-centric order of battle. Key systems — including the F-35B (on order), Apache helicopters, Harpoon missiles, and various PGMs — are either directly sourced from or dependent on the same US industrial base now under strain.
| Risk Category | Exposure Level | Key Systems / Concerns |
| PGM procurement delays | High | AMRAAM, Harpoon, Hellfire — all Raytheon/Boeing products |
| F-35B delivery timeline | Medium-High | Lockheed Martin prioritisation of higher-volume customers |
| Spare parts availability | Medium | Competition with US military for priority access during surge |
| Technology transfer constraints | Medium | US ITAR restrictions may tighten under emergency conditions |
| Price inflation | High | Surge demand will drive unit cost increases across PGM categories |
4.2 Geostrategic Exposure in the Indo-Pacific
The temporary impairment of US deterrence credibility during the stockpile replenishment window has direct relevance to Singapore’s security environment. Three dynamics warrant attention:
China’s Strategic Calculus
Beijing’s long-standing assessments of US military power projection capability are now partially validated. The PLA Rocket Force maintains deep stocks of missiles purpose-built for A2/AD operations in the Indo-Pacific. A perception that US PGM reserves are below threshold levels for simultaneous multi-theatre commitment may embolden risk-taking in the South China Sea or Taiwan Strait.
Regional Spillover from Iran Conflict
The Iran strikes have triggered protests across the US and raised fears of escalation. A prolonged Middle East conflict would continue to consume US munitions and military attention, reducing residual capacity for Indo-Pacific contingencies. Singapore’s position at the intersection of Indian Ocean and South China Sea shipping lanes makes it acutely sensitive to Middle East conflict spillover effects.
Alliance Architecture Stress
The Trump administration’s approach to alliances has introduced transactional uncertainty into the US extended deterrence framework. Singapore, while not a formal treaty ally, participates in the Five Power Defence Arrangements and maintains extensive defence cooperation with the US. Any erosion of US forward presence in Southeast Asia would require Singapore to recalibrate its security assumptions.
4.3 Economic and Trade Implications
Singapore’s role as a global trading hub means disruptions to Middle East sea lanes, potential Strait of Hormuz constraints, and elevated energy price volatility have direct economic consequences. The Iran conflict adds a new layer of supply chain risk to an economy still navigating post-pandemic restructuring.
- Oil price volatility: Singapore’s petrochemical and refining sector is directly exposed to Middle East energy disruptions
- Shipping insurance and route risk premiums have historically spiked during Middle East conflict episodes
- Singapore’s role as a transshipment hub means any disruption to global container flows has amplified local impact
4.4 Recommendations for Singapore
Defence Procurement Strategy
- Accelerate or front-load procurement of long-lead precision munitions before price inflation and allocation constraints worsen
- Diversify supplier base — deepen engagement with European (MBDA, MBDA-CAMM), Israeli (Rafael, IAI), and South Korean defence suppliers to reduce US dependency for specific categories
- Invest in Singapore Technologies Engineering (ST Engineering) domestic production capacity for certain munition classes
Strategic Hedging
- Maintain active diplomatic engagement with all major powers to preserve Singapore’s valued-neutral status during US-Iran escalation
- Pre-position strategic petroleum reserves and critical commodity stockpiles against Middle East disruption scenarios
- Enhance intelligence-sharing and early warning cooperation with Five Eyes and regional partners
Industrial and Economic Resilience
- Develop contingency trade route frameworks for scenarios involving Red Sea or Strait of Hormuz closure
- Engage the Defence Science and Technology Agency (DSTA) to assess gaps in domestic defence-industrial capability for critical consumables
- Leverage Singapore’s strong bilateral relationship with the US to secure guaranteed allocation priority for key defence systems
5. Conclusion
The convergence of three conflict theatres — Ukraine, Gaza, and now Iran — has exposed a structural vulnerability in the US defence industrial base that decades of financialisation and peacetime optimisation created but obscured. The March 2026 White House meeting with defence contractors and the USD ~50 billion supplemental budget request signal that Washington recognises the severity of the problem. Whether the response proves adequate depends not on political will alone, but on physical manufacturing realities that will take years to address.
For Singapore, the implications are multi-dimensional: procurement supply chains are under stress, deterrence credibility is temporarily strained in the Indo-Pacific, and broader economic exposure to Middle East conflict spillover is elevated. The appropriate response is not alarm, but proactive adaptation — diversifying suppliers, front-loading procurement, maintaining diplomatic flexibility, and building domestic resilience buffers.
The strategic lesson is one that Singapore has historically understood well: small states in a multipolar world cannot afford to assume that great power security guarantees are unconditional, unlimited, or unaffected by great power domestic industrial constraints.
| Dimension | Assessment | Priority Action |
| US Stockpile Recovery | 2–4 years minimum for critical systems | Supplemental funding + multi-year contracts |
| Indo-Pacific Deterrence | Temporarily weakened window 2026–2028 | Strengthen allied burden-sharing |
| Singapore Procurement | Supply constraints + price inflation risk | Front-load purchases, diversify suppliers |
| Singapore Geostrategic | Elevated Middle East spillover risk | Diplomatic hedging + strategic reserves |
| Singapore Economic | Oil/shipping route exposure | Contingency trade route planning |
Sources and Further Reading
Reuters, ‘US defence executives plan to meet at White House as strikes on Iran diminish stockpiles’, March 4, 2026.
Center for Strategic and International Studies (CSIS), ‘Empty Bins in a Wartime Environment’, 2023.
Congressional Research Service, ‘Defense Primer: US Defense Industrial Base’, various editions.
International Institute for Strategic Studies (IISS), ‘The Military Balance’, 2025.
RAND Corporation, ‘Sustaining the Fight: Resilient Maritime Logistics for a Naval Campaign in the Pacific’, 2020.
Ministry of Defence Singapore, Defence White Paper, 2022.