Administrative court complaints are however barred against decisions [administrative acts] whose subject- matter is that of internal or external security of the State … as well as other matters of foreign affairs. The decision of the [Federal Ministry to refuse Nada’s request for the removal of his name from the administrative act freezing assets] refers to measures for the implementation of international sanctions and belongs thus to those decisions dealing with matters of foreign affairs for which the Federal Council [the Executive] has in principle [exclusive] competence.
1 Answer
I don't think "barred against" is a structure here.
I think the text is saying that
"Administrative court complaints against decisions whose subject matter is xxx are barred."