Related Rule
Finland
Practice Relating to Rule 13. Area Bombardment
Finland’s Criminal Code (1889), as amended in 2008, provides that any person who “attacks undefended civilian targets or bombs them” shall be “sentenced for a war crime to imprisonment for at least one year or for life”. 
Finland, Criminal Code, 1889, as amended in 2008, Chapter 11, Section 5(1)(10).
(emphasis in original)