Dan Kaszeta is a London-based security and defence consultant. He has 35 years of experience centred upon chemical, biological, radiological, and nuclear (CBRN) defence issues, having served in posts in the US Army, the Department of Defense, the White House, and the US Secret Service before moving to the UK in 2008. He was an associate fellow of the Royal United Services Institute from 2021 to 2024. He is also a published historian and a Fellow of the Royal Historical Society.