The single largest tax expenditure in the United States is for employer-based health insurance. It’s even more than the mortgage interest deduction. In 2017, this exclusion cost the federal government about $260 billion in lost income and payroll taxes. This is significantly more than the cost of the Affordable Care Act each year.

Most devastating, Americans simply underestimated the Japanese. Their success at Pearl Harbor was due partly to astounding good luck, but also to American complacency, anchored in two assumptions: that our Asian adversary lacked the military deftness and technological proficiency to pull off an attack so daring and so complicated, and that Japan knew and accepted that it would be futile to make war on a nation as powerful as the United States.

Not since 1945 ... has Hitler’s manifesto, “Mein Kampf,” been officially published in German. Bavaria had refused to release it. But under German law, its copyright expires Dec. 31 ... That allows a team of historians ... to publish its new two-volume, 2,000-page edition ... The intention is to set the work in historical context, to show how Hitler wove truth with half-truth and outright lie, and thus to defang any propagandistic effect.