…some group, country or person cease the opportunity to call for stronger environmental protection during conflict. This year Iranian President Mahmoud Ahmadinejad suggest the UN adopt a convention to ban destruction of forests or pollution to reduce the pressure on the environment and natural resources. The occasion is, of course, International Day for Preventing the Exploitation of the Environment in War and Armed Conflict.
Methods or means of warfare that are intended or may be expected to case widespread, long-term and severe damage to the environment are prohibited.
– (Protocol I, Art. 35, Sec. 3)
Attacks against crops, livestock and agricultural areas needed for food production for the civilian population are prohibited. […] Attacks against civilian drinking water installation and irrigation works are prohibited.
– ( Protocol I, Art. 54 , Sec. 2)
(Quotes from genevaconventions.org)
But should the convention be stricter? Should it be more often enforced? Yes.