The United Nations’ Framework Convention on Climate Change (UNFCCC) obliges some states to report on their greenhouse gas emissions every year. But, because reporting military emissions is voluntary, many governments have chosen not to. We call this lack of transparency the ‘military emissions gap’.

We know that militaries are significant emitters of greenhouse gas emissions, whether in peacetime or during operations. We also know that improving transparency over their emissions reporting is a key first step towards making the urgent cuts that are needed.

Working with researchers from Lancaster and Durham universities ‘Concrete Impacts’ project, we have created – a website dedicated to making the data that states report to the UNFCCC more transparent and accessible. The site was launched during COP26.

The website is part of a package of activities that CEOBS is working on around how militarism, conflicts and peace influence greenhouse gas emissions. With growing military engagement on the issue, it is vital that we scrutinise the pledges and claims being made, as well as articulate our expectations for how militaries should address their outsize impact on the environment.

For more information please contact Doug Weir (doug at or Linsey Cottrell (linsey at


The IPCC’S missing military emissions

The IPCC’s failure to mention military or conflict emissions in its recent synthesis report points to a deeper problem. Ellie Kinney explains why solving it will require a concerted effort from states, researchers and civil society.

Publications and events

Report: EU military greening policies: A review of transparency and implementation

Report mapping out EU military environmental policies and “greening” initiatives, including the extent to which environmental performance reporting is made publicly available. The review also draws on direct feedback from EU defence ministries on their environmental policies, as well as from other stakeholders with an interest in military environmental policy.