That's just realpolitik. The fact of the matter is that we have recognized that a substantial part of a nations war capability comes from their unity and willingness to prosecute a war. Naturally with the Advent of the Internet and mass communication the weapons to begin to wage war on a populations resolve and unity without kinetic action came into being and are now a battlefront.

The TL;DR is that hearts and minds are the new battlefield and technology is the weapons.