Humanists are concerned for the well being of all people, whatever their beliefs. Wars have killed millions of people, and wars destroy animals, plants and natural habitats.
Wars make billions homeless, injured and bereaved.
Some people say that humans have a 'natural instinct' for war, because underneath all our modern civilisation we are still tribal animals wanting to defend our tribe and enlarge our territory. Humanists respond by saying that whether or not this is true, we should overcome it. Humanists generally support non-violent solutions, especially the prevention of situations that lead to war. But peaceful solutions can obviously be hard to reach, and an organisation like the United Nations needs the genuine co-operation of as many countries as possible if it is to succeed. Humanists helped to set up the UN and its related agencies, fighting famine and promoting the rights of people in developing countries.