Ignatius: A fresh approach to looking at foreign threats

The chairs of the House and Senate intelligence committees stated last weekend that the world was getting more unsafe. A few days later, the Pew Research Center reported that 52 percent of Americans think the U.S. should “mind its own business internationally,” the highest such total in the nearly 50-year history of that query. Taken together, these two items symbolize a serious emerging national problem.

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