War, supply chain disruption and sustainability: practical lessons for business in 2026
Geopolitical disruption can delay materials, change transport routes and increase operating costs. What can SMEs, logistics managers and manufacturers do to make their supply chains more reliable without losing sight of sustainability?
The objective is not to predict every crisis. It is to understand vulnerabilities before they interrupt operations.
The disruption may be global. The consequences are local.
A company does not need to trade directly with a conflict region to feel the impact. A missing component, longer sea transit time or higher fuel cost can affect production schedules, stock levels and customer commitments.
Materials arrive late
A critical part is delayed. Production planning changes, capacity is lost and customer orders may need to be rescheduled.
Routes become unreliable
Carriers change sailing schedules or routes. Transit times and costs become less predictable, affecting warehouse and distribution planning.
Decisions become harder
Buy extra stock, find another supplier or wait? Each option has consequences for cash, service and operating costs.
These are illustrative operating situations, not claims about a particular Merlyn client.
2026: supply chains are adapting, but exposure remains
The war in Ukraine demonstrated how quickly industrial suppliers, transport networks and commodity flows can be disrupted. More recent disruptions have reinforced the importance of understanding dependencies beyond a company’s direct suppliers.
In its 8 October 2026 outlook, the World Trade Organization described international goods trade as more resilient than expected in the first half of the year, despite conflict-related disruption. That resilience was uneven. Trade flows adjusted through alternative sources, routes and markets, while exposure differed by region and sector.
For individual businesses, the lesson is not that international supply chains have become safe or unsafe. It is that reliability depends on knowing where the weak points are and having realistic alternatives.
A more reliable supply chain is not automatically a greener one
Companies often need to balance lead time, cost, inventory, energy use and emissions. Improving one measure can worsen another.
UNCTAD reports that longer maritime routes have increased transport delays, costs and emissions. The actual balance depends on product, transport mode, supplier location and operating conditions. Review of Maritime Transport 2025.
Four steps to make supply chain risks manageable
Start with the parts of the business where disruption would cause the greatest operational damage. This is more useful than trying to assess every possible global event.
Identify dependencies
List critical components, suppliers, routes, systems and facilities. Include single points of failure and second-tier risks where relevant.
Assess the impact
Ask what happens after a 2-week, 4-week or 8-week interruption. Review inventory coverage, customer commitments and cash effects.
Build realistic options
Validate alternative suppliers, routes, stock policies and escalation responsibilities. Agree who makes which decision.
Monitor and improve
Track supplier reliability, lead-time variability, inventory exposure and the cost or footprint of contingency decisions.
Six questions worth discussing this month
Use these questions in a management meeting, supplier review or operational improvement workshop.
The practical lesson
Companies cannot prevent geopolitical disruption. They can reduce its operational impact by making dependencies visible, planning sensible alternatives and measuring the consequences of their decisions. A resilient supply chain is not simply one with more stock or more suppliers. It is one that can respond without losing control of cost, service and sustainability.
For many SMEs, the most useful starting point is a focused review of the few suppliers, processes and transport flows that matter most.
Make the risks visible. Then take practical action.
Merlyn Consult approaches supply chain resilience as an operational management issue: clarify the current process, identify its real dependencies, compare workable options and translate decisions into clear responsibilities.
The same approach can support manufacturing continuity, purchasing decisions, warehouse planning and transport operations. The aim is proportionate improvement rather than a large programme for its own sake.
Sources and editorial background
- WTO — Global Trade Outlook and Statistics, 8 October 2026. Current trade outlook and evidence of uneven resilience.
- UNCTAD — Review of Maritime Transport 2025. Shipping rerouting, transport costs, emissions and reliability.
- European Commission — Corporate sustainability due diligence. Updated EU framework; obligations must be assessed for each company, not assumed for all SMEs.
Historical context: the earlier page included an article credited to Harm Beerens for SCM / Supply Chain Media on the initial supply chain effects of the war in Ukraine. This 2026 article is a newly written Merlyn editorial analysis, not a reproduction of that contribution. Its original historical attribution is retained here for transparency.
Editorial date: 30 October 2026. This article provides general business considerations, not legal or regulatory compliance advice.