Loving our Enemies

In Matthew 5:43-47, why did Jesus say to love our enemies? Isn’t the rule, love your neighbor? Jesus expanded it to include everyone. We love our friends but hate our foes. Now Jesus wants us to love even our enemies? Is that possible? How can that make any sense in a world of war and crime? We tend to follow the example of the good neighbors around us who treat their friends with respect and dignity, but Jesus challenged us to live above the standards of our neighborhood. We are to live by heavenly standards. Those standards are not defined by address, flag or national border, but by God who loves all peoples equally.