If you want to know why Donald Trump will go down in history as a great president, listen to (or read, when it is available) his speech in Krasinski Square, Warsaw today. Yes, there is a lot of the usual diplomatic persiflage: “Thank you, President Duda. Thank you, Poland.” But be an adult and distinguish the gem from the setting. While the anti-Trump press was busy running stories warning about “unease in Brussels” over Trump’s visit to Poland, Trump once again totally outflanked his critics. Those who have ears, let them hear: