| The Hague Summit Declaration | NATO | report |
| Defence expenditures and NATO's five-percent commitment | NATO | report |
| nato.int/en/news-and-events/articles/news/2026/07/07/defence-investment-update-record-spending-in-europe-and-canada | — | report |
| eda.europa.eu/news-and-events/news/2026/07/16/eu-defence-spending---418-billion-in-2025--projected-to--454-billion-in-2026 | — | government |
| defence-industry-space.ec.europa.eu/eu-defence-industry/safe-security-action-europe_en | — | government |
| defence-industry-space.ec.europa.eu/commission-invites-member-states-use-eur213-billion-under-safe-boost-defence-readiness-and-support-2026-10-29_en | — | government |
| gov.pl/web/finanse/sejm-przyjal-ustawe-budzetowa-na-2026-rok | — | government |
| gov.pl/web/diplomacy/deputy-prime-minister-radoslaw-sikorski-takes-part-in-defence24-days | — | government |
| The Strategic Defence Review 2025 - Making Britain Safer: secure at home, strong abroad | Ministry of Defence | official_record |
| ecb.europa.eu/press/economic-bulletin/focus/2025/html/ecb.ebbox202505_07~d1ab88c6b1.et.html | — | government |
| defence-industry-space.ec.europa.eu/estonia-receives-first-eur3516-million-payment-under-safe-defence-instrument-2026-08-12_en | — | government |