Règle correspondante
Practice Relating to Rule 65. Perfidy
Section B. Killing, injuring or capturing an adversary by resort to perfidy
Sweden’s IHL Manual (1991) affirms: “Under the provisions of the [1907 Hague Regulations] it is prohibited to kill or injure an enemy by resort to perfidy.” 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section, pp. 28 and 29.
Under Sweden’s Penal Code (1962), as amended in 1998, “the killing or injuring of an opponent by means of some … form of treacherous behaviour” constitutes a crime against international law. 
Sweden, Penal Code, 1962, as amended in 1998, Chapter 22, § 6(2).