Also, how to fight back against vladimir putin. Lessons from petro poroshenko, the president of ukraine. His nation is literally on the front lines of russian aggression, and how to handle immigration from across the globe. Ill talk with mexicos president , switzerlands president and new zealands Prime Minister on their views about one of the most divisive issues today. But first, here is my take. President trumps speech on tuesday at the u. N. Was an intelligent, at times eloquent presentation of his America First world view. He laid out an approach of pursuing narrow selfinterest over broader global ones and action over multilateral cooperation. He might not realize as he withdraws america from these global arenas, the rest of the world is moving on without washington. Wittingly or not, donald trump seems to be hastening the arrival of a post american world. Take one of his first major actions, pulling out of the transpacific partnership. This sweeping trade deal was an attempt to op