USA’s TechExport Journal about HSD
"The Netherlands is a key market for U.S. manufacturers and suppliers of safety and security products. Over the last several years, the global market for safety and security equipment and services ahs grown rapidly and is now estimated at over $130 billion. The European Union (EU) account for about one-third of that, with steady growth expected despite the recent economic downturn.
[...] At the center of this is the Netherlands. The Netherlands has a strong domestic demand for safety and security products and also serves as a gateway to the European market.
[...] Today, the Hague is home to Europe's largest security cluster. Known as The Hague Security Delta (HSD), it is comprised of more than 300 companies, organisations, training programs and research institutions, generating nearly $2 billion in revenue.'