Соответствующая норма
Spain
Practice Relating to Rule 71. Weapons That Are by Nature Indiscriminate
In 2008, in response to a question concerning the prohibition of cluster munitions, Spain’s Secretary of State for Constitutional and Parliamentary Matters wrote:
The Spanish government is at all times supporting the measures advanced within the international community in which humanitarian considerations have primacy over the expected operational advantages that the use by the military of certain weapons, considered to cause excessive suffering to, or that have indiscriminate effects on, the civilian population, … could have. 
Spain, Response by the Secretary of State for Constitutional and Parliamentary Matters to Question No. 184/002509, 11 July 2008, p. 92.