Related Rule
Ireland
Practice Relating to Rule 15. The Principle of Precautions in Attack
Section D. Information required for deciding upon precautions in attack
Upon ratification of the 1977 Additional Protocol I, Ireland stated:
In relation to Article 51 to 58 inclusive, it is the understanding of Ireland that military commanders and others responsible for planning, deciding upon, or executing attacks necessarily have to reach decisions on the basis of their assessment of the information from all sources which is reasonably available to them at the relevant time. 
Ireland, Declarations and reservations made upon ratification of the 1977 Additional Protocol I, 19 May 1999, § 9.