Harry,
Jesus said to "Seek first the kingdom of God." If God is love, as scripture says, then that kingdom may be the authority of love in our every word, action and indeed, thought. I certainly haven't attained that level of existence, but that's the standard we're judged by. Jesus said that in the kingdom of heaven we're not man and woman but one in the spirit, and to pray that it be done on Earth as it is in heaven, then told us that when we pray to act as if our prayers have been answered so we should be acting as if we are one. He said that unless we love even our enemies we'll not see heaven. 
So is it your contention that Nazi Germany was ordained of God? To God, says scripture, the nations are meaningless and as dust on the scales. Does that sound like God wanted us to be separated from each other by lines drawn on a map?