In U.S., the bill of rights protects civil liberties. People in the United States, hold civil rights, which are those privileges, immunities and rights held by all Americans and political rights, which are the rights that are restricted to those who are entitled to participate in elections, as candidates or voters. The distinction is important since not all are eligible to vote though they all should enjoy their freedoms. This may no longer be feasible as majority of the civil rights are taken to include the political rghts in this age. National security can be defined as a country's need to maintain its survival by use of military, political and economic power for diplomacy. Civil liberty are freedoms and rights exercised by individuals in any country provided by their country's legislation or international laws, for example the right to life, freedom of speech, freedom of expression, the right to privacy, the right to security and liberty and many more. National security issues arose after the second world war in the united states of America with initial emphasis on the military. For any country in this day and age, national security encompasses energy security, economic security, environmental security and many more. Security threats range not only from external states but also from illegal drug cartels, multi-national organizations and terrorists groups. The civil liberty concepts are protected under a country's constitution, bill of rights. Other legal legislation are also adopted by country's to uphold this civil liberties by giving effect to international laws passed in conventions such as the International Covenant and Political Rights and the European Convention on Human Rights. The protection of civil rights is deemed as the responsibility of a country's people and government. The extent of some civil liberties, such as reproductive rights, property rights and several others are subject of debate. The debate of...