1. The concept of human rights has emerged from the concept of natural rights. Natural rights are those rights that we are endowed with because we are born as human beings. Human rights are those rights that are necessary for living as a human being and as a constituent of society.
2. People who have to leave their motherland against their wishes or are forced to go to other nations, seeking refuge or for security are called as refugees. People become refugees due to torture or persecution for belonging to a particular race or religion, due to war or a disaster, etc. In such situations people are forced to leave their own country and seek shelter in another country.
3. Terrorism is spreading fear and terror in a society by using or threatening to use violence against common and innocent people for achieving political goals. Terrorism can be described as organised and planned violence.
4. Traditional war is a conflict between two or more sovereign states. In such wars, the geographical boundaries between nations acquire importance, i.e. national security is connected with geographical boundaries.
5. (i) In order to discuss the immediate and long term problems related to the environment and to find solutions on them, a United Nations Conference on human environment was called at Stockholm from 5th to 16th June, 1972.
(ii) It was stressed that it is the responsibility of all nations to cooperate to overcome pollution.
(iii) The developing nations feel that the developed nations are more responsible for the decline of the environment and they should take the responsibility for stopping the decline.
(iv) Non-governmental organisations working in the field of environmental protection were also present and assumed a bigger role in the decision making process at international conferences regarding the environment.
(v) The issue of the protection of the common global wealth was raised.
(vi) A consensus emerged that it was the responsibility of all the nations to protect these resources.
(vii) It was after this conference that the United Nations created the United Nations Environment Programme (UNEP).
(viii) Many international treaties about environment were signed after this conference.
(ix) Several rules were made about the protection of environment. Environmental movements started on a large scale at national as well as at the international level.
