Iranian FM on Saudi Aramco attack: "We didn't do it"; Iran rules out talks with U.S. unless sanctions are lifted; After Saudi oil attack, Trump orders sanctions & troops to region; Warren surges in Democratic polls; U.N. Chief: The world is "Waking up" to the climate crisis; On Climate Change: America vs The World?; Guterres: Public opinion is putting more and more pressure on the U.S. to contribute positively to climate action; Malcolm Gladwell is the best-selling author of "The Tipping Point," "Blink" "Outliers" and "David and Goliath." His new book is "Talking to Strangers."; To trust or not to trust: Hitler & Chamberlain; Gladwell: Chamberlain was wrong to judge Hitler based on a face-to-face meeting. He should have stayed home and read Mein Kampf.; Gladwell: When you meet somebody as charismatic as Hitler, you risk overvaluing the information you take in during that encounter.;
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