The Unit for Public International Law is responsible for:

• the development of public international law
• the provision of expertise, advice and opinions on public international law
• the preparation of international treaties and national legislation in cooperation with the Unit for Treaty Law, particularly where they relate to the development of public international law
• contribution to the work of international organisations relating to the Unit's responsibilities
• legal questions relating to the United Nations
• issues relating to international judicial and investigative bodies, unless the issue falls within the competence of another organisational unit
• national sanctions legislation in accordance with international obligations binding on Finland
• issues relating to the suppression of international terrorism.