States as international persons — In general — Sovereignty and independence — Conduct of foreign relations — Extradition — Allegations of defects in legal procedure followed in extraditing State — Whether courts in the requesting State competent to examine such allegations — The law of Belgium

The individual In international law — Extradition — Procedure of extradition — Allegations of defects in legal procedure followed in extraditing State — Whether courts in the requesting State competent to examine such allegations — Whether any requirement that extradition request be notified, to the individual concerned — Belgium-Spain Extradition Treaty, 1870 — The law of Belgium