Paradoxically, while wars are environmentally destructive, former military zones, both within and between countries, often become wildlife reguges where endangered plant and animal species thrive.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/war-and-environment
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/kashmir-times-jammu
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment