Sweden’s IHL Manual (1991) considers that the fundamental guarantees for persons in the power of one party to the conflict as contained in Article 75 of the 1977 Additional Protocol I are a part of customary international law. 

Upon ratification of the 1977 Additional Protocol I, Sweden stated in relation to Article 75 that “paragraph 4, sub-paragraph (h) shall be applied only to the extent that it is not in conflict with legal provisions which allow, in exceptional circumstances, the reopening of proceedings which have resulted in a final conviction or acquittal”.