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Insights

Battling the elements: will climate change reshape defence spending?

Gregory Turnbull Schwartz
Senior Analyst, Fixed Income

Environmental change isn’t just a humanitarian concern, it’s a mechanical one. From jet engines to toll roads, shifting climates are reshaping military readiness, infrastructure resilience, and the investment case for the companies that build and maintain such assets.

What does a US-based jet engine manufacturer have in common with an Italian toll road operator? Much has been written about how ESG (environmental, social and governance) investment principles might affect military hardware manufacturers. Far less has been written about how the environment may affect military hardware and its manufacturers, and the essential infrastructure used for both military and civilian purposes.

Stress-tested by nature

It is our contention that changes in the environment will increase the cost of military preparedness and increase the attractiveness of the bonds of both the producers of military equipment and the operators of European toll roads.

Perceived threats will change as the environment changes, and military spending is affected by threat perception. Recent defence reviews from both the US and UK highlight changes to the ‘corridors of strategic interaction’1 due to ‘new geographical realities’2 – for example, the thawing of ice in the Arctic meaning a previously unpassable land expanse between neighbouring countries becomes possible to traverse.
Aside from the concept of changing corridors of conflict, climate variability has a direct impact on equipment and products. Jet engines, for example, perform differently depending on the environment of operation. Extremes of temperature – either  too low or too high – change the operating characteristics, and the requirement for maintenance. This is already a consideration for planning maintenance cycles. Will doing so based on ‘typical flying conditions’ become less useful if the weather is increasingly volatile? Real-time temperature conditions would become more important, which would by definition make forward planning challenging. Two recent events involving F-35s, including a pilot ejection, illustrated the hazards when an intemperate environment (Alaska in one case) mixes with human error to cause a malfunction. In ‘normal’ conditions both events would likely have been uneventful, but the harsh operating climate exacerbated the human error causing in one instance the loss of a plane (worth almost $200 million). As we see greater climate volatility and severity, investment grade bond issuers such as General Electric and RTX Corporation3 should gain from both new equipment needs and their lucrative engine maintenance and servicing businesses.

Infrastructure overlap

Could climate change result in less money for equipment? If military organisations have to spend billions repairing items, or building protective civil works, does that take away from the equipment budget? So far, it appears that relatively wealthy countries, which the large military spenders tend to be, always find ways to manage these competing needs. A good example of this is the recent discussions around increased military expenditure within NATO members. When pressed to increase spending to higher portions of gross domestic product, some members responded by expanding the scope of what could be included in the concept of ‘defence’. One perhaps incongruous item that  has long been included in such spending is mobility infrastructure.

It is broadly recognised that certain civil works are needed in order to sustain military readiness. If there were no rail network, airports or roads, one might query how useful it would be to have military equipment. So, there is a balance to be had. Within the European Union there is an Action Plan on Military Mobility (APMM), which includes road transport. The plan makes the point that there is a high degree of overlap (more than 90% ) between the road infrastructure deemed to be of military significance and the roads within the Trans-European Transport Network (TEN-T), a network of roads, railways and water infrastructure within EU borders. TEN-T forms part of the operational networks of investment grade bond issuers including Autostrade, Vinci, ARRP and Abertis.

The APMM may help toll-road operators for two reasons. As it has been adopted by the European Commission (EC) there is actual funding behind it that could be available to help member states with the portions of the network that lie within their boundaries. By designating these as high priority infrastructure corridors, it would seem to open up the possibility of member states improving this infrastructure within their national frameworks without breaching state aid rules around financing for private firms. This has not been tested, but it would seem at least incongruous – and arguably absurd – were a member state to upgrade a militarily important section of motorway, but by facilitating that work find itself accused of anti-competition activities by the EC, the very body which designated this to be a priority. If this is the case, toll road operators within Europe who issue investment grade corporate bonds may find it easier to get investment cases agreed with government regulators, to the benefit of their bondholders.

The bottom line

Based on past spending patterns, and current geopolitical posturing, it is likely that the wealthy economies of Europe, and the US, will find ways to increase spending to deal with their burgeoning equipment and mobility priorities. This will be to the benefit not only of defence manufacturers but European road operators as well.

As investors we will continue to monitor how environmental pressures shape both strategic priorities and operational realities. The intersection of climate resilience and defence is no longer theoretical – it’s investable.

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1US Department of Defense, 2022 National Defense Strategy of the United States of America, 2022
2UK Ministry of Defence, Strategic Defence Review, 2025
3The mention of specific companies is not a recommendation

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Important Information

 

For use by professional clients and/or equivalent investor types in your jurisdiction (not to be used with or passed on to retail clients). For marketing purposes.

 

This document is intended for informational purposes only and should not be considered representative of any particular investment. This should not be considered an offer or solicitation to buy or sell any securities or other financial instruments, or to provide investment advice or services. Investing involves risk including the risk of loss of principal. Your capital is at risk.  Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. The value of investments is not guaranteed, and therefore an investor may not get back the amount invested. International investing involves certain risks and volatility due to potential political, economic or currency fluctuations and different financial and accounting standards. The securities included herein are for illustrative purposes only, subject to change and should not be construed as a recommendation to buy or sell. Securities discussed may or may not prove profitable. The views expressed are as of the date given, may change as market or other conditions change and may differ from views expressed by other Columbia Threadneedle Investments (Columbia Threadneedle) associates or affiliates. Actual investments or investment decisions made by Columbia Threadneedle and its affiliates, whether for its own account or on behalf of clients, may not necessarily reflect the views expressed. This information is not intended to provide investment advice and does not take into consideration individual investor circumstances. Investment decisions should always be made based on an investor’s specific financial needs, objectives, goals, time horizon and risk tolerance. Asset classes described may not be suitable for all investors. Past performance does not guarantee future results, and no forecast should be considered a guarantee either. Information and opinions provided by third parties have been obtained from sources believed to be reliable, but accuracy and completeness cannot be guaranteed. This document and its contents have not been reviewed by any regulatory authority.

 

In Australia: Issued by Threadneedle Investments Singapore (Pte.) Limited [“TIS”], ARBN 600 027 414.  TIS is exempt from the requirement to hold an Australian financial services licence under the Corporations Act 2001 (Cth) and relies on Class Order 03/1102 in respect of the financial services it provides to wholesale clients in Australia. This document should only be distributed in Australia to “wholesale clients” as defined in Section 761G of the Corporations Act.  TIS is regulated in Singapore (Registration number: 201101559W) by the Monetary Authority of Singapore under the Securities and Futures Act (Chapter 289), which differ from Australian laws.

 

In Singapore: Issued by Threadneedle Investments Singapore (Pte.) Limited, 3 Killiney Road, #07-07, Winsland House 1, Singapore 239519, which is regulated in Singapore by the Monetary Authority of Singapore under the Securities and Futures Act (Chapter 289). Registration number: 201101559W. This advertisement has not been reviewed by the Monetary Authority of Singapore.

 

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In Japan: Issued by Columbia Threadneedle Investments Japan Co., Ltd. Financial Instruments Business Operator, The Director-General of Kanto Local Finance Bureau (FIBO) No.3281, and a member of Japan Investment Advisers Association and Type II Financial Instruments Firms Association.

 

In the UK: Issued by Threadneedle Asset Management Limited, No. 573204 and/or Columbia Threadneedle Management Limited, No. 517895, both registered in England and Wales and authorised and regulated in the UK by the Financial Conduct Authority.

 

In the EEA: Issued by Threadneedle Management Luxembourg S.A., registered with the Registre de Commerce et des Sociétés (Luxembourg), No. B 110242 and/or Columbia Threadneedle Netherlands B.V., regulated by the Dutch Authority for the Financial Markets (AFM), registered No. 08068841.

 

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In the Middle East: This document is distributed by Columbia Threadneedle Investments (ME) Limited, which is regulated by the Dubai Financial Services Authority (DFSA).  For Distributors: This document is intended to provide distributors with information about Group products and services and is not for further distribution. For Institutional Clients: The information in this document is not intended as financial advice and is only intended for persons with appropriate investment knowledge and who meet the regulatory criteria to be classified as a Professional Client or Market Counterparties and no other Person should act upon it.

 

This document may be made available to you by an affiliated company which is part of the Columbia Threadneedle Investments group of companies: Columbia Threadneedle Management Limited in the UK; Columbia Threadneedle Netherlands B.V., regulated by the Dutch Authority for the Financial Markets (AFM), registered No. 08068841.

 

Columbia Threadneedle Investments is the global brand name of the Columbia and Threadneedle group of companies. © 2025 Columbia Threadneedle. All rights reserved.

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Important information

Important Information

 

For use by professional clients and/or equivalent investor types in your jurisdiction (not to be used with or passed on to retail clients). For marketing purposes.

 

This document is intended for informational purposes only and should not be considered representative of any particular investment. This should not be considered an offer or solicitation to buy or sell any securities or other financial instruments, or to provide investment advice or services. Investing involves risk including the risk of loss of principal. Your capital is at risk.  Market risk may affect a single issuer, sector of the economy, industry or the market as a whole. The value of investments is not guaranteed, and therefore an investor may not get back the amount invested. International investing involves certain risks and volatility due to potential political, economic or currency fluctuations and different financial and accounting standards. The securities included herein are for illustrative purposes only, subject to change and should not be construed as a recommendation to buy or sell. Securities discussed may or may not prove profitable. The views expressed are as of the date given, may change as market or other conditions change and may differ from views expressed by other Columbia Threadneedle Investments (Columbia Threadneedle) associates or affiliates. Actual investments or investment decisions made by Columbia Threadneedle and its affiliates, whether for its own account or on behalf of clients, may not necessarily reflect the views expressed. This information is not intended to provide investment advice and does not take into consideration individual investor circumstances. Investment decisions should always be made based on an investor’s specific financial needs, objectives, goals, time horizon and risk tolerance. Asset classes described may not be suitable for all investors. Past performance does not guarantee future results, and no forecast should be considered a guarantee either. Information and opinions provided by third parties have been obtained from sources believed to be reliable, but accuracy and completeness cannot be guaranteed. This document and its contents have not been reviewed by any regulatory authority.

 

In Australia: Issued by Threadneedle Investments Singapore (Pte.) Limited [“TIS”], ARBN 600 027 414.  TIS is exempt from the requirement to hold an Australian financial services licence under the Corporations Act 2001 (Cth) and relies on Class Order 03/1102 in respect of the financial services it provides to wholesale clients in Australia. This document should only be distributed in Australia to “wholesale clients” as defined in Section 761G of the Corporations Act.  TIS is regulated in Singapore (Registration number: 201101559W) by the Monetary Authority of Singapore under the Securities and Futures Act (Chapter 289), which differ from Australian laws.

 

In Singapore: Issued by Threadneedle Investments Singapore (Pte.) Limited, 3 Killiney Road, #07-07, Winsland House 1, Singapore 239519, which is regulated in Singapore by the Monetary Authority of Singapore under the Securities and Futures Act (Chapter 289). Registration number: 201101559W. This advertisement has not been reviewed by the Monetary Authority of Singapore.

 

In Hong Kong: Issued by Threadneedle Portfolio Services Hong Kong Limited 天利投資管理香港有限公司. Unit 3004, Two Exchange Square, 8 Connaught Place, Hong Kong, which is licensed by the Securities and Futures Commission (“SFC”) to conduct Type 1 regulated activities (CE:AQA779). Registered in Hong Kong under the Companies Ordinance (Chapter 622), No. 1173058.

 

In Japan: Issued by Columbia Threadneedle Investments Japan Co., Ltd. Financial Instruments Business Operator, The Director-General of Kanto Local Finance Bureau (FIBO) No.3281, and a member of Japan Investment Advisers Association and Type II Financial Instruments Firms Association.

 

In the UK: Issued by Threadneedle Asset Management Limited, No. 573204 and/or Columbia Threadneedle Management Limited, No. 517895, both registered in England and Wales and authorised and regulated in the UK by the Financial Conduct Authority.

 

In the EEA: Issued by Threadneedle Management Luxembourg S.A., registered with the Registre de Commerce et des Sociétés (Luxembourg), No. B 110242 and/or Columbia Threadneedle Netherlands B.V., regulated by the Dutch Authority for the Financial Markets (AFM), registered No. 08068841.

 

In Switzerland: Issued by Threadneedle Portfolio Services AG, Registered address: Claridenstrasse 41, 8002 Zurich, Switzerland.

 

In the Middle East: This document is distributed by Columbia Threadneedle Investments (ME) Limited, which is regulated by the Dubai Financial Services Authority (DFSA).  For Distributors: This document is intended to provide distributors with information about Group products and services and is not for further distribution. For Institutional Clients: The information in this document is not intended as financial advice and is only intended for persons with appropriate investment knowledge and who meet the regulatory criteria to be classified as a Professional Client or Market Counterparties and no other Person should act upon it.

 

This document may be made available to you by an affiliated company which is part of the Columbia Threadneedle Investments group of companies: Columbia Threadneedle Management Limited in the UK; Columbia Threadneedle Netherlands B.V., regulated by the Dutch Authority for the Financial Markets (AFM), registered No. 08068841.

 

Columbia Threadneedle Investments is the global brand name of the Columbia and Threadneedle group of companies. © 2025 Columbia Threadneedle. All rights reserved.

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