Weapons have a great effect on the environment. In the Gulf War (1990 - 1991) the Kuwait Forces set fire to the oil rigs , in turn polluting the air and creating respiratory issues for people in the local area. Atomic weapons like fusion and fission weapons cause a lot of damage to the environment. Napalm can cause bush fires and destroy villages and can kill native animals. The Vietnam War had significant environmental implications by the use of chemical agents to destroy military significant vegetation. Enemies who found an advantage in remaining invisible by blending into a civilian population or by taking cover in dense vegetation forced opposing armies to target natural ecosystems.The US military used “more than 20 million gallons of herbicides, were sprayed by the US to defoliate forests, clear growth along the borders of military sites and eliminate enemy crops.” The chemical agents gave the US an advantage in wartime efforts. However, the vegetation was unable to regenerate and left behind bare mudflats even years after spraying. Not only was the vegetation effected, but also the wildlife. The uncertain long term effects of these herbicides are now being discovered by looking at modified species distribution patterns through habitat degradation and loss in wetland systems, which absorbed the runoff from the mainland. The Rwandan genocide led to the killing of roughly 800,000 Tutsis and moderate Hutus. The war created a massive migration of nearly 2 million Hutus fleeing Rwanda over the course of just a few weeks to refugee camps in Tania and now modern day. This large displacement of people in refugee camps put pressure on the surrounding ecosystem. Forests were cleared in order to provide wood for building shelters and creating cooking fires. Consequences from the conflict also included the degradation of National Parks and Reserves. The population crash in Rwanda shifted personnel and capital to other parts of the country, making it hard to protect wildlife. The loss of conservationist efforts has made it harder to educate the people of Rwanda and explain the importance of conservation for the future. In order to build a solid foundation for conservation programs, according to ecologists, social and political problems need to be solved first to have conservation organisations to be created.