The Kingdom of God has arrived in the Person of God's Son, Jesus the Christ. He rules right here and right now and forevermore.
All the insanity we see in this world is just that, INSANITY. The evil we face is nothing more than hearts holding onto the idea that they have to do something to bring in God's Kingdom. Either into their hearts or the world in general.
Of course, there are those who will be honest with God and say, "You can keep your kingdom, God. I'm doing just fine with my own."
So then, there is the insanity of humanity defined. Man is out to be his own god even if the effort ends up sending himself to hell. Well, at least, they think they won't have to deal with that other king.
"If I ascend up into heaven, thou art there:
If I make my bed in hell, behold, thou art there."