It was the actions of the government that gave Japan a reason to attack us. Classical liberal or libertarians would not have incited Japan by freezing their assets or interfering with their commerce. Pearl Harbor was not a bolt from the blue, and when you get right down to it, how did it threaten the actual country? Destroying a bunch of obsolete ships is a long way from invading or actually harming the country itself. As far as the US government went, it was thanks to the awesome power and efficacy of big government that we had Japanese losing their property and being interned in concentration camps, a country filled with Stalinesque propaganda urging citizens to sacrifice for their government, spy on the neighbors, produce greater quantities and be good sheep, and an arrogant, uninformed dilettante stepping all over the cranks of the adults who were trying to fight a war responsibly, and sabotaging the end results of our theoretical war aims (we end tyranny and dictatorship in Europe by liberating the countries that CHOSE dictators, and turning the rest over to a tyrannical dictator who seems nice to said arrogant dilettante?!? ). Yay government!