Instead of dropping high explosives on North Vietnam, I said we should drop cars, air conditioners, TVs and refrigerators.  They would have been so busy enjoying the good life they would have stayed home.  And the increased draw on the electrical grid there would have crashed it.
Instead of trying to "bomb them back into the Stone Age," like Curtis LeMay said, we should have bombed them forward into the Consumer Age.
I don't think this would work in North Korea, but Bibles sure won't either.

I suggest you find and ask, those in foreign countries, who have been persecuted for the Christian faith. Only they can give you their answers. I have some in-laws who were persecuted in China. The Communists forbade them from meeting and owning Bibles. As they tell it, each person in their group would have a portion of the Bible, the pages separated, so when a handful of them would meet, one person was assigned to bring just one passage to study on. They braved much persecution from the Communists, and these in-laws eventually had to flee China.