Medieval just-war scholarship nearly confined love-of-enemy to the martial sphere

Evidence

In his discussion in The just ~r in the Middle Ages, Russell refers only once to the commandment to love one’s enemies. He does so in the context of explaining how “certain [biblical] passages appeared to prohibit Christian participation in war. In His Sermon on the Mount Christ counseled His followers not to resist evil but to turn the other cheek to blows. Christians should love their enemies and not judge one another” (Russell, The just ~r in the Middle Ages, 10). Yet in this rare instance, the consequences of the commandment seem to have been exclusively confined to the question of conducting warfare, as if the enemy necessarily belonged to a martial sphere. — Gil Anidjar, The Jew, the Arab, 898