He says Pol Pot knew this as well.
Wars are like pieces of art.
Usually commanded by economic-military interests, wars are styled or framed by politicians. The Cold War was an ideological style to stage or frame post-World War II conflicts, which faded after the Berlin Wall fell. All, winners and losers, had their role and share of power. The only real losers were the victims needed for the realism of the staged drama. To play the role of a fighter, an enemy was needed first.