Here is a brief excerpt from an article by Nicholas Kristof for The New York Times. To read the complete article, check out others, and obtain subscription information, please click here.

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WHEN terrorists in Nigeria organized a secret attack last month, they didn’t target an army barracks, a police department or a drone base. No, Boko Haram militants attacked what is even scarier to a fanatic: a girls’ school.

That’s what extremists do. They target educated girls, their worst nightmare.

That’s why the Pakistani Taliban shot Malala Yousafzai in the head at age 15. That’s why the Afghan Taliban throws acid on the faces of girls who dare to seek an education.

Why are fanatics so terrified of girls’ education? Because there’s no force more powerful to transform a society.

The greatest threat to extremism isn’t drones firing missiles, but girls reading books.

In that sense, Boko Haram was behaving perfectly rationally — albeit barbarically — when it kidnapped some of the brightest, most ambitious girls in the region and announced plans to sell them as slaves. If you want to mire a nation in backwardness, manacle your daughters.

What saddens me is that we in the West aren’t acting as rationally. To fight militancy, we invest overwhelmingly in the military toolbox but not so much in the education toolbox that has a far better record at defeating militancy.

President Obama gives the green light to blow up terrorists with drones, but he neglects his 2008 campaign promise to establish a $2 billion global fund for education. I wish Republicans, instead of investigating him for chimerical scandals in Benghazi, Libya, would shine a light on his failure to follow through on that great idea.

So why does girls’ education matter so much? First, because it changes demography.

One of the factors that correlates most strongly to instability is a youth bulge in a population. The more unemployed young men ages 15 to 24, the more upheaval.

One study found that for every 1 percentage point increase in the share of the population aged 15 to 24, the risk of civil war increases by 4 percent.

That means that curbing birthrates tends to lead to stability, and that’s where educating girls comes in. You educate a boy, and he’ll have fewer children, but it’s a small effect. You educate a girl, and, on average, she will have a significantly smaller family. One robust Nigeria study managed to tease out correlation from causation and found that for each additional year of primary school, a girl has 0.26 fewer children. So if we want to reduce the youth bulge a decade from now, educate girls today.

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Nicholas Kristof, a columnist for The New York Times since 2001, writes op-ed columns that appear twice a week. Mr. Kristof won the Pulitzer Prize two times, in 1990 and 2006. In 2012, he was a Pulitzer finalist in Commentary for his 2011 columns that often focused on the disenfranchised in many parts of the world.

Photo credit: Damon Winter/The New York Times