Related Rule
Practice Relating to Rule 31. Humanitarian Relief Personnel
Uruguay’s Law on Cooperation with the ICC (2006) states:
26.2. Persons and objects affected by the war crimes set out in the present provision are persons and objects which international law protects in international or internal armed conflict.
26.3. The following are war crimes:
11. Intentionally directing attacks against personnel … involved in a humanitarian assistance … mission, as long as they are entitled to the protection granted to civilians or civilian objects under the international law of armed conflict. 
Uruguay, Law on Cooperation with the ICC, 2006, Article 26.2 and 26.3.11.