As global tensions continue to rise amid shifting security dynamics, the need for transparent, reliable, and impartial data has never been greater. The Stockholm International Peace Research Institute (SIPRI) has been at the forefront of independent research on conflict, armaments, arms control and disarmament since its founding in 1966. Its comprehensive datasets serve as essential tools for policymakers, researchers, and analysts seeking to understand military spending patterns, arms industry developments, and their broader geopolitical implications. In this session, SIPRI's researcher will share the methodology, scope, and significance of SIPRI's data on Military Expenditure and Arms Production. Understanding the databases reveals trends and stories within two of the most topical subjects of the past years.