National security, or national defence (national defense in American English), is the security and defence of a sovereign state, including its citizens, economy, and institutions, which is regarded as a duty of government. Originally conceived as protection against military attack, national security is widely understood to include also non-military dimensions, such as the security from terrorism, minimization of crime, economic security, energy security, environmental security, food security, and cyber-security. Similarly, national security risks include, in addition to the actions of other states, action by violent non-state actors, by narcotic cartels, organized crime, by multinational corporations, and also the effects of natural disasters.
Governments rely on a range of measures, including political, economic, and military power, as well as diplomacy, to safeguard the security of a state. They may also act to build the conditions of security regionally and internationally by reducing transnational causes of insecurity, such as climate change, economic inequality, political exclusion, and nuclear proliferation.
Definitions
Many definitions of national security have been proposed, starting from simpler definitions which emphasised freedom from military threat and from political coercion. Among the many definitions proposed to date are the following, which show how the concept has evolved to encompass non-military concerns:
"A nation has security when it does not have to sacrifice its legitimate interests to avoid war, and is able, if challenged, to maintain them by war." (Walter Lippmann, 1943).
"The distinctive meaning of national security means freedom from foreign dictation." (Harold Lasswell, 1950)
"National security objectively means the absence of threats to acquired values and subjectively, the absence of fear that such values will be attacked." (Arnold Wolfers, 1960)
"National security then is the ability to preserve the nation's physical integrity and territory; to maintain its economic relations with the rest of the world on reasonable terms; to preserve its nature, institution, and governance from disruption from outside; and to control its borders." (Harold Brown, U.S. Secretary of Defense, 1977–1981)
"National security... is best described as a capacity to control those domestic and foreign conditions that the public opinion of a given community believes necessary to enjoy its own self-determination or autonomy, prosperity, and wellbeing." (Charles Maier, 1990)
"National security is an appropriate and aggressive blend of political resilience and maturity, human resources, economic structure and capacity, technological competence, industrial base and availability of natural resources and finally the military might." (National Defence College of India, 1996)
"[National security is the] measurable state of the capability of a nation to overcome the multi-dimensional threats to the apparent well-being of its people and its survival as a nation-state at any given time, by balancing all instruments of state policy through governance... and is extendable to global security by variables external to it." (Prabhakaran Paleri, 2008)
Dimensions
Potential causes of national insecurity include actions by other states (e.g. military or cyber attack), violent non-state actors (e.g. terrorist attack), organised criminal groups such as narcotic cartels, and also the effects of natural disasters (e.g. flooding, earthquakes). Systemic drivers of insecurity, which may be transnational, include climate change, economic inequality and marginalisation, political exclusion, and nuclear proliferation.
In view of the wide range of risks, the security of a state has several dimensions, including economic security, energy security, physical security, environmental security, food security, border security, and cyber security. These dimensions correlate closely with elements of national power.
Increasingly, governments organise their security policies into a national security strategy (NSS); as of 2017, Spain, Sweden, the United Kingdom, and the United States are among the states to have done so. Some states also appoint a National Security Council and/or a National Security Advisor which is an executive government agency, it feeds the head of the state on topics concerning national security and strategic interest. The national security council/advisor strategies long term, short term, contingency national security plans. India holds one such system in current, which was established on 19 November 1998.
Although states differ in their approach, various forms of coercive power predominate, particularly military capabilities. The scope of these capabilities has developed. Traditionally, military capabilities were mainly land- or sea-based, and in smaller countries, they still are. Elsewhere, the domains of potential warfare now include the air, space, cyberspace, and psychological operations. Military capabilities designed for these domains may be used for national security, or equally for offensive purposes, for example to conquer and annex territory and resources.
Physical
In practice, national security is associated primarily with managing physical threats and with the military capabilities used for doing so. That is, national security is often understood as the capacity of a nation to mobilise military forces to guarantee its borders and to deter or successfully defend against physical threats including military aggression and attacks by non-state actors, such as terrorism. Most states, such as South Africa and Sweden, configure their military forces mainly for territorial defence; others, such as France, Russia, the UK and the US, invest in higher-cost expeditionary capabilities, which allow their armed forces to project power and sustain military operations abroad.
Infrastructural
Infrastructure security is the security provided to protect infrastructure, especially critical infrastructure, such as airports, highways, rail transport, hospitals, bridges, transport hubs, network communications, media, the electricity grid, dams, power plants, seaports, oil refineries, and water systems. Infrastructure security seeks to limit vulnerability of these structures and systems to sabotage, terrorism, and contamination.
Many countries have established government agencies to directly manage the security of critical infrastructure, usually, through the Ministry of Interior/Home Affairs, dedicated security agencies to protect facilities such as United States Federal Protective Service, and also dedicated transport police such as the British Transport Police. There are also commercial transportation security units such as the Amtrak Police in the United States. Critical infrastructure is vital for the essential functioning of a country. Incidental or deliberate damage can have a serious impact on the economy and essential services. Some of the threats to infrastructure include:
Terrorism: person or groups deliberately targeting critical infrastructure for political gain. In the 2008 Mumbai attacks, the Mumbai central station and hospital were deliberately targeted.
Sabotage: person or groups such as ex-employees, anti-government groups, environmental groups. Refer to Bangkok's International Airport Seized by Protestors.
Information warfare: private person hacking for private gain or countries initiating attacks to glean information and damage a country's cyberinfrastructure. Cyberattacks on Estonia and cyberattacks during the 2008 South Ossetia war are examples.
Natural disaster: hurricane or other natural events that damage critical infrastructures such as oil pipelines, water, and power grids. See Hurricane Ike and Economic effects of Hurricane Katrina for examples.
Virtual
Computer security, also known as cybersecurity or IT security, refers to the security of computing devices such as computers and smartphones, as well as computer networks such as private and public networks, and the Internet. It concerns the protection of hardware, software, data, people, and also the procedures by which systems are accessed, and the field has growing importance due to the increasing reliance on computer systems in most societies. Since unauthorized access to critical civil and military infrastructure is now considered a major threat, cyberspace is now recognised as a domain of warfare. One such example is the use of Stuxnet by the US and Israel against the Iranian nuclear programme.
Political
Barry Buzan, Ole Wæver, Jaap de Wilde and others have argued that national security depends on political security: the stability of the social order. Others, such as Paul Rogers, have added that the equitability of the international order is equally vital. Hence, political security depends on the rule of international law (including the laws of war), the effectiveness of international political institutions, as well as diplomacy and negotiation between nations and other security actors. It also depends on, among other factors, effective political inclusion of disaffected groups and the human security of the citizenry.
Economic
Economic security, in the context of international relations, is the ability of a nation state to maintain and develop the national economy, without which other dimensions of national security cannot be managed. Economic capability largely determines the defence capability of a nation, and thus a sound economic security directly influences the national security of a nation. That is why we see countries with sound economy, happen to have sound security setup too, such as The United States, China, India among others. In larger countries, strategies for economic security expect to access resources and markets in other countries and to protect their own markets at home. Developing countries may be less secure than economically advanced states due to high rates of unemployment and underpaid work.
Environmental
Environmental security, also known as ecological security, refers to the integrity of ecosystems and the biosphere, particularly in relation to their capacity to sustain a diversity of life-forms (including human life). The security of ecosystems has attracted greater attention as the impact of ecological damage by humans has grown. The degradation of ecosystems, including topsoil erosion, deforestation, biodiversity loss, and climate change, affect economic security and can precipitate mass migration, leading to increased pressure on resources elsewhere. Ecological security is also important since most of the countries in the world are developing and dependent on agriculture and agriculture gets affected largely due to climate change. This effect affects the economy of the nation, which in turn affects national security.
The scope and nature of environmental threats to national security and strategies to engage them are a subject of debate. Romm (1993) classifies the major impacts of ecological changes on national security as:
Transnational environmental problems. These include global environmental problems such as climate change due to global warming, deforestation, and loss of biodiversity.
Local environmental or resource pressures. These include resource scarcities leading to local conflict, such as disputes over water scarcity in the Middle East; migration into the United States caused by the failure of agriculture in Mexico; and the impact on the conflict in Syria of erosion of productive land. Environmental insecurity in Rwanda following a rise in population and dwindling availability of farmland, may also have contributed to the genocide there.
Environmentally threatening outcomes of warfare. These include acts of war that degrade or destroy ecosystems. Examples are the Roman Empire destruction of agriculture in Carthage; Saddam Hussein's burning of oil wells in the Gulf War; the use of Agent Orange by the UK in the Malayan Emergency and the US in the Vietnam War for defoliating forests.
Energy and natural resources
Resources include water, sources of energy, land, and minerals. Availability of adequate natural resources is important for a nation to develop its industry and economic power. For example, in the Persian Gulf War of 1991, Iraq captured Kuwait partly in order to secure access to its oil wells, and one reason for the US counter-invasion was the value of the same wells to its own economy. Water resources are subject to disputes between many nations, including India and Pakistan, and in the Middle East.
The interrelations between security, energy, natural resources, and their sustainability is increasingly acknowledged in national security strategies and resource security is now included among the UN Sustainable Development Goals. In the US, for example, the military has installed solar photovoltaic microgrids on their bases in case of power outage.
Issues
Consistency of approach
The dimensions of national security outlined above are frequently in tension with one another. For example:
The high cost of maintaining large military forces can place a burden on the economic security of a nation and annual defence spending as per cent of GDP varies significantly by country. Conversely, economic constraints can limit the scale of expenditure on military capabilities.
Unilateral security action by states can undermine political security at an international level if it erodes the rule of law and undermines the authority of international institutions. The invasion of Iraq in 2003 and the annexation of Crimea in 2014 have been cited as examples.
The pursuit of economic security in competition with other nation states can undermine the ecological security of all when the impact includes widespread topsoil erosion, biodiversity loss, and climate change. Conversely, expenditure on mitigating or adapting to ecological change places a burden on the national economy.
If tensions such as these are mismanaged, national security policies and actions may be ineffective or counterproductive.
Versus transnational security
Increasingly, national security strategies have begun to recognise that nations cannot provide for their own security without also developing the security of their regional and international context. For example, Sweden's national security strategy of 2017 declared:"Wider security measures must also now encompass protection against epidemics and infectious diseases, combating terrorism and organised crime, ensuring safe transport and reliable food supplies, protecting against energy supply interruptions, countering devastating climate change, initiatives for peace and global development, and much more."
The extent to which this matters, and how it should be done, is the subject of debate. Some argue that the principal beneficiary of national security policy should be the nation state itself, which should centre its strategy on protective and coercive capabilities in order to safeguard itself in a hostile environment (and potentially to project that power into its environment, and dominate it to the point of strategic supremacy). Others argue that security depends principally on building the conditions in which equitable relationships between nations can develop, partly by reducing antagonism between actors, ensuring that fundamental needs can be met, and also that differences of interest can be negotiated effectively. In the UK, for example, Malcolm Chalmers argued in 2015 that the heart of the UK's approach should be support for the Western strategic military alliance led through NATO by the United States, as "the key anchor around which international order is maintained".
Civil liberties and human rights
Approaches to national security can have a complex impact on human rights and civil liberties. For example, the rights and liberties of citizens are affected by the use of military personnel and militarised police forces to control public behaviour; the use of surveillance, including mass surveillance in cyberspace, which has implications for privacy; military recruitment and conscription practices; and the effects of warfare on civilians and civil infrastructure. This has led to a dialectical struggle, particularly in liberal democracies, between government authority and the rights and freedoms of the general public.
Even where the exercise of national security is subject to good governance, and the rule of law, a risk remains that the term national security may become a pretext for suppressing unfavorable political and social views. In the US, for example, the controversial USA Patriot Act of 2001, and the revelation by Edward Snowden in 2013 that the National Security Agency harvests the personal data of the general public, brought these issues to wide public attention. Among the questions raised are whether and how national security considerations at times of war should lead to the suppression of individual rights and freedoms, and whether such restrictions are necessary when a state is at peace.
Meaning
Daniel W. Drezner says, "the definition of national security has been stretched almost beyond recognition" with some seeing "everything as a national security threat". Drezner explains how policymakers overreacting can "explain that they were just being cautious or that their very warnings helped neutralize the threat". "The term has been described as invoking "an ambiguous foreign threat" and being "exploited to deflect public scrutiny and provide political cover for unpopular policies". The extensive focus on national security can also lead the public to look to security rather than diplomacy.
By region
Argentina and Brazil
National security ideology as taught by the US Army School of the Americas to military personnel was vital in causing the military coup of 1964 in Brazil and the 1976 one in Argentina. The military dictatorships were installed on the claim by the military that Leftists were an existential threat to the national interests.
China
China's military is the People's Liberation Army (PLA). The military is the largest in the world, with 2.3 million active troops in 2005.