Related Rule
Sweden
Practice Relating to Rule 2. Violence Aimed at Spreading Terror among the Civilian Population
Sweden’s IHL Manual (1991) states that terror attacks are prohibited, that is, “attacks deliberately aimed at causing heavy losses and creating fear among the civilian population”. 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 3.2.1.5, p. 44.