Economics of defense

The roots of the science can be tracked back to the 1920s when The Political Economy of War by Arthur Cecil Pigou was originally published.[4] A major step forward can be then accredited to Charles J. Hitch and Roland McKean and their work The Economics of Defense in the Nuclear Age from 1960.[2] A great contribution to the subject came in 1975 when the British economist G. Kennedy published his book The Economics of Defence.[5] However, importance of the field grew especially in the late 1980s and early 1990s due to political instability caused by the breakup of the Soviet Union and liberation of Eastern Europe.[6] This resulted in the publication of a complex overview of the current state of the field in 1995 from Todd Sandler and Keith Hartley called The Handbook of Defense Economics.[7]

While the science as such started developing in the 20th century, many of its topics can be found long before then. For example, the first written set of laws called the Code of Hammurabi from the 18th century BC can be considered one of the earliest works dealing with problems and questions of the economics of defense.[8] Similarly, economic aspects of war and military operations are broken down in a great detail in Sun Tzu's The Art of War from the 5th century BC.[9] During the Middle Ages, political institutions emerged and a great step forward was made in military with the invention of devices using gunpowder.[10]

Generally, developments in defense economics reflect current affairs.[2] During the Cold War, the main topics included superpower arms races, establishment of strong and lasting alliances and nuclear weapon research.[2] Afterwards, the focus shifted to conversion opportunities, disarmament and the peace dividend availability.[2] And at the beginning of the new millennium, the research shifted its attention to an increasing number of regional and ethnic conflicts (Africa, Bosnia, Kosovo, Afghanistan, Iraq), international terrorist threats (terrorist attacks on the USA) and weapons of mass destruction.[2] Besides that, much work was dedicated to NATO, the European Union and other alliances that accepted new members and continued with developing new missions, rules and international organizations, an example being the European Security and Defence Policy, which involved the introduction of the European Defence Equipment Market and the European Defence Technological and Industrial Base.[2]

The field revolves around finding the optimal resource allocation among defense and other functions of the government.[11] While the primal goal is to find the optimal size of the defense budget with respect to sizes of other budgets managed by the public body, the field also studies the optimization of allocation among specific missions and outputs such as arms control, disarmament, civil defense, sealift, arms conversion, mobilization bases, or weaponry composition.[11] At the same time, different ways these goals can be achieved are analyzed on lower levels.[11] These consist of finding the optimal choice between alternative logistic arrangements, rifles, specialized equipment, contract provisions, base locations and so on.[11] Since the defense management of a country consists of choosing between many substitutes, an analysis of costs and benefits of various options is vital.[11]

Economizing in the economics of defense represents the principle of reallocating available scarce resources such that an output of the greatest possible value is produced.[11] This can be achieved in two ways:[11]

• Improvement of the economic calculus
• Improvement of the institutional arrangements that shape defense choices

These two are closely intertwined since finding an optimal choice is worthless if institutions lead decision-makers to different choices, just as functioning institutions do not provide much help if an optimal choice is not found.[11] An absence of a widely accepted tool to calculate the change in value when choosing among various options represents a major difficulty in the economics of defense because it makes the identification of the optimal allocation practically impossible.[11] Differences of opinions on security and threat protection topics are common between people, which causes impobability of such tool being ever developed.[2]

Although the economics of defense mainly studies microeconomic topics, which involve allocation optimization and optimal choice identification, it also looks into several macroeconomic topics, which focus on the impact of defense expenditures on various macroeconomic variables such as economic growth, gross domestic product and employment.[7]

In terms of economics, a distinctive feature of the defense is that it is public goods, and as such it is both non-excludable and non-rivalrous.[2] As such, it may suffer the so-called "free rider problem".[12]

Typically, the United States uses a combination of hard power (military force), soft power (diplomacy and foreign assistance) and domestic counterterrorism (homeland security).[15] During the early 2000s, the United States' national defense budget rose to about $800 billion per year. In recent years, it has dropped to $600 billion annually, which is still a large figure relative to Cold War averages and other countries' budgets.[16]

At the Prague Summit 2002, with the 9/11 terror attack not in the distant past and the enlargement of NATO into Eastern Europe (Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia), member states agreed the need to strengthen the alliance's ability to deal with a wide range of new threats. After this summit, member countries committed to establishing a minimum level of acceptable defense spending of 2% of annual GDP. As of 2016 figures, only five member states (United States of America, Estonia, United Kingdom, Poland and Greece) have reached this figure NATO. "Defence Expenditure of NATO Countries (2010-2017)" (PDF). NATO Media. Retrieved 1 May 2018.</ref>.

After defense spending cuts during the Global Recession, members of the alliance agreed at the Wales Summit 2014 that those that did not already meet the defense spending guidelines to stop cuts to associate budget, gradually increase spending, and aim to move towards the goal within a decade Banks, Martin (15 March 2018). "Results are in: Here's how much NATO allies spent on defense in 2017". Defense News. Retrieved 1 May 2018.</ref>. Thereafter, spending among European allies and Canada increase their defense spending from 2016 to 2017 by approximately 4.87 percent. NATO. "Defence Expenditure of NATO Countries (2010-2017)" (PDF). NATO Media. Retrieved 1 May 2018.</ref> There has a significant increase in the defence spending of some Eastern Europe countries as they see a threat from Russia after the annexation of Crimea, this significant threat has seen an increase in deployment to defence equipment to this region from the likes of the United Kingdom and the United States of America. Although there has been a significant increase in the defence expenditure in some members of the alliance there are a number of countries who are very far away from reaching the 2 percent defence expenditure target.

At the Wales Summit, it was also agreed that Allies who currently spend less than 20% of their annual defense spending on major new equipment, including related Research & Development, will aim, within a decade, to increase their annual investments to 20% or more of total defense expenditures.[20] According to 2017 estimate figures, 12 countries will have reached this target (Romania, Luxembourg, Lithuania, Turkey, Bulgaria, United States, Norway, France, Poland, United Kingdom, Italy and Slovakia).

In recent times, American presidents have become critical of the defense spending of their European NATO allies. Donald Trump, then a presidential candidate, described NATO as "obsolete" but has since withdrawn these claims, he continued to argue that the allies must spend more on their defense. The previous president Barack Obama was concerned that not all NATO members are "chipping in" toward the cost of a collective defense and deterrent against Russia at the time of Ukrainian Russian conflict.[21] According to the 2017 NATO Annual Report on Defence Expenditure, the United States of America spends almost twice the amount of US Dollars on Defence than their European and Canadian colleagues. Even with the significant difference in the expenditure NATO allies account for 70 percent of the global total military expenses.

• War finance
• Economic militarism