The EU is one example of how national states try to manage transnational problems. Countless national civil servants meet in EU working groups and committees with representatives of (non-governmental) organisations to exchange information, harmonise policies and regulations, and decide on implementation. To what extent and in which way do Dutch civil servants participate in these networks? How are their activities steered by politicians? One of the main conclusions of this study is that public policymaking within highly Europeanised departments is highly embedded within these transnational government networks, whereas policymaking within weakly Europeanised departments is to a substantial degree shielded from these government networks for reasons of, among others, the protection of national sovereignty of the Member State in their field.