Furthermore, the resolution requires every state to criminalize various forms of non-state actor involvement in weapons of mass destruction and its related activities in its domestic legislation and, once in place, to enforce such legislation. By virtue of its universal scope and mandatory nature, resolution 1540 marks a departure from previous nonproliferation arrangements and adds a novel layer to the nonproliferation regime. Before the resolution was adopted, the non-proliferation regime was based on many partly overlapping arrangements, none of which established universal mandatory obligations.[2]