When President Obama and Mitt Romney cross swords on defense policy, it can sound like a schoolyard fight: Who loves the military more? Who is tougher? Who would lead a more muscular America?

This is the way we expect candidates to talk about defense: in terms of power, force, even national pride. But increasingly, when it comes to the role the Department of Defense actually plays for the nation, it misses the point. Over the past decade, the Pentagon has become far more complex than the conversation about it would suggest. What “military” means has changed sharply as the Pentagon has acquired an immense range of new expertise. What began as the world’s most lethal strike force has grown into something much more wide-ranging and influential.

Today, the Pentagon is the chief agent of nearly all American foreign policy, and a major player in domestic policy as well. Its planning staff is charting approaches not only toward China but toward Latin America, Africa, and much of the Middle East. It’s in part a development agency, and in part a diplomatic one, providing America’s main avenue of contact with Africa and with pivotal oil-producing regimes. It has convened battalions of agriculture specialists, development experts, and economic analysts that dwarf the resources at the disposal of USAID or the State Department. It’s responsible for protecting America’s computer networks. In May of this year, the Pentagon announced it was creating its own new clandestine intelligence service. And the Pentagon has emerged as a surprisingly progressive voice in energy policy, openly acknowledging climate change and funding research into renewable energy sources.

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http://articles.boston.com/2012-05-27/ideas/31837499_1_foreign-policy-pentagon-schoolyard-fight