Despite the protection afforded by several important legal instruments, the environment continues to be the silent victim of armed conflicts worldwide. The United Nations Environment Programme (UNEP) has conducted over twenty post-conflict assessments since 1999, using state-of-the-art science to determine the environmental impacts of war. From Kosovo to Afghanistan, Sudan and the Gaza Strip, UNEP has found that armed conflict causes significant harm to the environment and the communities that depend on natural resources. Direct and indirect environmental damage, coupled with the collapse of institutions, lead to environmental risks that can threaten people’s health, livelihoods and security, and ultimately undermine.