This Is Why Global Income Inequality Is a Real National-Security Threat

Here are four ways frustration with perceived inequality leads to political behavior that has security consequences.

Last February, Director of National Intelligence James Clapper presented the U.S. intelligence community’s annual Worldwide Threat Assessment to a congressional committee. He cited many of the usual suspects, including cyberattacks, terrorism, the proliferation of weapons of mass destruction and transnational organized crime. He also discussed the security impact of sluggish economic growth, reduced global output and poverty.

However, a global issue that is growing in importance did not make the short list: global income inequality. Global income inequality is not a traditional security issue, but it is an emerging threat that the national-security establishment should take seriously.

Income Inequality as a Political Issue

The development community and scholars have long debated the causes and effects of income inequality within states, also known as class disparity. What is new since the Great Recession of 2008, however, is the emergence of income inequality as a salient political issue. Thomas Piketty’s book on the history of wealth and income inequality in Europe and the United States, Capital in the Twenty-First Century, energized the debate over income inequality. President Obama followed Piketty’s lead, publicly warning that the American income gap is “the defining challenge of our time” and a “fundamental threat.” And the World Economic Forum ranked rising income inequality as the world’s top priority for 2015.

Unlike within-country income inequality, global income inequality has attracted little attention outside of development circles. Former World Bank economist Branko Milanovic defines global income inequality as the sum of inequality within and between states. He shows that income inequality among states is much greater than within states and acknowledges that estimating whether global income inequality is rising or falling is difficult and highly sensitive to measurement differences.

Trends aside, how does global income inequality threaten America’s security interests? And why should policy makers monitor it when they are already preoccupied with an arguably unprecedented number of foreign-policy crises, not to mention a growing income gap within the United States?

An Epidemic of Discontent

The answer boils down to relative deprivation and its impact on political behavior and security conditions. Relative deprivation is a psychological concept that describes the discontent people experience when they compare their political, economic or social situations to other individuals or groups and come up feeling short. Put bluntly, feelings of relative deprivation increase frustration.

When globalization and social media are combined with heightened political debate over income inequality, the result is an epidemic of relative deprivation. More than ever, people are looking beyond their neighborhoods and comparing their situations to others in their home countries as well to those in other states. The rising global middle class, in particular, is more aware of the wealth and consumption habits of middle classes in other countries with higher standards of living.

As a consequence, the gap between rising expectations and perceived reality is widening and breeding discontent. Political leaders of countries with wide income disparities and large lower classes—such as North Korea, Cuba and China—understand well the political dangers of relative deprivation, which is one reason why they restrict media access.

4 Ways Global Income Inequality Undermines Security

Of course, feelings of relative deprivation do not have a direct impact on security conditions. Instead, frustration leads to political behavior that has security consequences. Below are four ways in which global income inequality is fueling frustration and political behaviors that are undermining America’s security interests:

1. It stokes border and immigration tensions. Income inequality within and between states is an important source of international migration. Migrant laborers cross their borders believing that their destination country offers better jobs than their native country. The presence of migrant workers, however, often creates social and political tensions, especially if the country is experiencing its own economic problems, and that friction can morph into a security problem. For example, the swelling number of Muslims in France, who fled poverty and extreme income inequality in North Africa and other states, has led to riots and is creating a fertile environment for Islamic extremism. In addition, the exodus of tens of thousands of Central American children last year to the more affluent United States to escape the ravages of poverty and crime quickly became a bilateral issue and policy priority for Washington.

2. It fuels transnational organized crime. Criminals involved in narcotics and human trafficking are the beneficiaries of income gaps in their home nations and between neighboring states. Many criminals pursue illicit activities because they often pay better than most formal and informal jobs. As for the victims, economic hardship drives them to pursue desperate measures, such as flee their country in a manner that endangers their lives or become forced or coopted into the sex trade. On the demand side, thanks to heightened demand for cocaine in major cities in the United States and Europe, drug traffickers are prospering in relatively less affluent Central and South American countries.

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