That's an epistemic community. And, you know, they don't operate in all fields of policy. They only operate in fields of policy where science matters. In the field of human rights, forget it. There are no epistemic communities.
Science is irrelevant to that field.
In environmental politics, it matters a great deal. And also monetary and development policy. Science becomes a component of politics because the scientific way of grasping reality is used to define the interest that political actors articulate and defend. The doing of actors can be described by observers as an exercise of defining and realizing interests, informed by changing scientific knowledge about man and nature. Page 11 in your book on that field.