The International Institute For Strategic Studies
Also known as: I I S S
The IISS aims to provide, from an international perspective, the best objective information on military and political developments and to assist in conflict resolution through the conduct of dialogues and conferences, research and publications. Its mission is to promote the adoption of sound policies to further global peace and security and maintain civilised international relations.
Activities & Mission
The IISS aims to provide, from an international perspective, the best objective information on military and political developments and to assist in conflict resolution through the conduct of dialogues and conferences, research and publications. Its mission is to promote the adoption of sound policies to further global peace and security and maintain civilised international relations.
Areas of Operation
Where this charity is registered to operate, as self-declared to the Charity Commission. These are regulatory classifications, not a list of active programmes, and don't necessarily indicate fundraising activity in each location.
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Country
Local Authority
Financial Information
Financial Efficiency
Higher than 36% of UK Arts charities with income over £10M (sample: 81). How is this calculated?
Higher than 54% of UK Arts charities with income over £10M. How is this calculated?
Lower overhead than 79% of UK Arts charities with income over £10M. (Lower overhead is generally read as more efficient.) How is this calculated?
Latest Financial Breakdown
Income Sources
Expenditure Categories
Financial Trend
Annual Returns
As filed with the Charity Commission for England and Wales. Most recent filing covers the financial year ending 2025.
| Financial Year | Income | Expenditure | Charitable Spending | Net Assets | Reserves | Staff |
|---|---|---|---|---|---|---|
| 2025 | £31,589,000 | £29,525,000 | £27,802,000 | £39,417,000 | £11,896,000 | 179 / 0 |
| 2024 | £26,511,555 | £25,491,805 | £24,776,025 | £33,739,618 | £9,291,000 | 163 / 0 |
| 2023 | £25,030,000 | £25,239,000 | £24,794,000 | £26,272,000 | £7,370,000 | 163 / 0 |
| 2022 | £24,538,985 | £23,956,682 | £23,694,517 | £26,772,345 | £7,090,000 | 158 / 0 |
| 2021 | £18,396,133 | £17,583,042 | £17,231,702 | £26,061,654 | £6,218,000 | 141 / 0 |
Staff column shows: Employees / Volunteers
Frequently asked questions about The International Institute For Strategic Studies
What does The International Institute For Strategic Studies do?
The IISS aims to provide, from an international perspective, the best objective information on military and political developments and to assist in conflict resolution through the conduct of dialogues and conferences, research and publications. Its mission is to promote the adoption of sound policies to further global peace and security and maintain civilised international relations.
How much income did The International Institute For Strategic Studies report in 2025?
The International Institute For Strategic Studies reported total income of £31.59m and reported expenditure of £29.52m for the financial year ending 2025, based on the most recent annual return filed with the Charity Commission.
How efficient is The International Institute For Strategic Studies?
The International Institute For Strategic Studies has a program ratio of 82.6%, meaning that share of its income goes directly to charitable activities. This is higher than 36% of UK Arts charities with income over £10M (sample of 81 charities). See our methodology for how this is calculated.
When was The International Institute For Strategic Studies registered as a charity?
The International Institute For Strategic Studies was registered with the Charity Commission for England and Wales on 22 September 1962 as charity number 206504. It has been registered for 64 years.
Who runs The International Institute For Strategic Studies?
The International Institute For Strategic Studies is governed by a board of 12 trustees. The chair of trustees is Lord Mark Sedwill. Trustees are legally responsible for the charity's governance and are listed in full on its profile.
Where does The International Institute For Strategic Studies operate?
The International Institute For Strategic Studies operates across 6 areas, including Bahrain, Germany, India and 3 others. The full list is shown on its profile.
Is The International Institute For Strategic Studies a registered charity?
Yes — The International Institute For Strategic Studies is a registered charity in England and Wales, charity number 206504.
Details
6 TEMPLE PLACE
LONDON
WC2R 2PG
Registry Information
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Also governs 1 other charity
Also governs 1 other charity
Also Known As
- I I S S
Data & trust
- Register data refreshed
- 30 July 2026
- Methodology
- How metrics are calculated