A lack of consensus among researchers and policymakers over how to define “environmental security,” “national security,” and “human security” complicates discussions of the security implications of environmental and demographic change, assert Robert Mcab and Kathleen Bailey in “Latin America and the debate over environmental protection and national security,” published recently in the Defense Institute of Security Assistance Management Journal. A shortage of theoretical and empirical evidence makes proving the existence of environment-demography-security linkages difficult. Nevertheless, argue the authors, “given the relatively fragile nature of many Latin American economies, accurately addressing these threats is imperative for economic and social stability and security.”

Latin America’s rural environments face severe threats, including deforestation, land degradation, erosion, and water scarcity and pollution. “Human-induced land degradation and water shortages directly affect economic sufficiency in many rural areas,” write the authors. Another environmental cause of insecurity and violence—in Latin America and elsewhere—is land distribution. Inequitable land distribution in El Salvador, Latin America’s most densely populated country, was one of the causes of the country’s 18-year civil war. The 1992 peace agreement that ended the war set up a plan for land redistribution, although some question how fully it has been implemented.

Demographic shifts can also destabilize communities and regions: Migration can generate tensions and violence between newcomers and established populations, as has occurred in the disputed rural region of San Juan, which lies between Nicaragua and Costa Rica. Moreover, Latin America is the most urbanized part of the developing world, and growing urban populations—often swelled by internal migrants—are straining cities’ and municipalities’ ability to provide basic services such as waste disposal and clean water.

Mcab and Bailey emphasize that demographic phenomena such as population growth and migration do not automatically create environmental degradation or threaten national security. Instead, it is the manner in which they interact with other socio-economic and political factors that can lead them to damage the environment or foster insecurity.

In today’s USA Today, General Anthony Zinni (Ret.) and Admiral Leighton Smith (Ret.) make a succinct argument for why addressing global issues such as poverty, disease, corruption, and climate change is essential to making the United States safer. Such an op-ed provides a prime example of how military leaders can play a productive role in advocating for non-military tools that will advance a broader human security agenda. “We understand that the U.S. cannot rely on military power alone to keep us safe from terrorism, infectious disease and other global threats that recognize no borders,” write Zinni and Smith. “We [the United States] must match our military might with a new commitment to investing in improving people’s lives overseas.”

A European Union (EU) report released ahead of a major EU summit on March 13-14 warns that climate change is likely to create or worsen a host of local, regional, and global security challenges. “Climate change is best viewed as a threat multiplier which exacerbates existing trends, tensions and instability,” says the report.

The Kenyan army launched a major assault on the Sabaot Land Defence Force (SLDF) yesterday, said officials. More than 500 people have been killed in land clashes involving the SLDF over the past year and a half, including 13 last week.

Today’s Los Angeles Times reports that Colombia’s Macarena National Park is being deforested and polluted by illegal coca farms. After being driven from farmland by U.S.-sponsored aerial fumigation, coca growers have invaded Macarena and other national parks, where fumigation is illegal. In August 2006, six workers manually clearing coca in Macarena were killed by a bomb detonated by the Revolutionary Armed Forces of Colombia, or FARC. Recently, Colombia has begun to shift away from aerial fumigation toward manual eradication, which is more effective but poses significant risks to the workers and the security personnel guarding them.

Coca farming gives rise to a wide range of negative environmental effects, including “chemical dumping, deforestation, soil erosion, water pollution, a shift to mono-agriculture, bio-diversity loss, and a potential loss of cultural eco-knowledge,” according to American University’s Trade and Environment Database.

A New York Times article from 1989 demonstrates that, sadly, coca trafficking has been causing violence and environmental destruction across South America for decades.

Nigerian Senator David Dafinone argued yesterday that the Nigerian government should abandon plans to allocate 444.6 billion Nigerian nairas in the 2008 budget to security in the conflict-ravaged Niger Delta. “Dedicating such huge amount to policing the Niger Delta will be counter productive because resentment of the state and the oil companies by the people will continue to deepen,” said Dafinone, who hails from the Delta. “There is urgent need to reorder the political, social and economic development of the Niger Delta,” he continued. “The root cause of the crisis in the region remains the denial of the peoples’ right to land and its content.”

Last month, the Brazilian government announced it would step up measures to combat illegal logging in the Amazon rainforest, including deploying Brazilian soldiers and police officers to regions that have recently suffered heavy deforestation. Last week, it made good on that promise, as Brazilian police confiscated 353,000 cubic feet of lumber from eight illegal sawmills in the state of Para—one of the biggest loads ever seized.

A paper commissioned by the Institute for Global Dialogue and the Open Society Initiative for Southern Africa explores the prospects for sharing and jointly managing the water resources of the Southern African Development Community (SADC). “Water resources availability has been and still is high on the national security agenda of most SADC states,” write Daniel Malzbender and Anton Earle.

A report from the Institute for Policy Studies analyzes the disparities between the U.S. government’s FY 2008 spending on military security and climate security.

The United Nations, European Union, and United States each have important roles to play in mitigating climate change’s security threats, argue John Podesta and Peter Ogden in The Washington Quarterly. The article echoes The Age of Consequences: The Foreign Policy and National Security Implications of Climate Change, published jointly last year by the Center for a New American Security, which Podesta heads, and the Center for Strategic and International Studies.

UNAIDS released a statement earlier this week expressing its concern that the recent violence in Kenya is disrupting efforts to combat the country’s HIV/AIDS epidemic.

In the Global Dashboard blog, David Steven remarks on three “hidden drivers” of instability in Pakistan: the government’s failure to capitalize on the “demographic dividend,” the potential socio-economic benefits of a large working-age population; the rising food, water, and energy scarcity faced by working- and middle-class Pakistanis; and what Steven calls “the worrying role being played by the Pakistan army, once a source of national stability and pride.”