Dear Marta, I believe this is very wise advice to S-G Guterres, especially coming from a very pro-UN historian, Stephen Schlesinger, the author of “Act of Creation: The Founding of The United Nations,” which won the 2004 Harry S. Truman Book Award. This is one of the finest books I have read on the origins of the UN, and a must-read for all aficionados of the UN. I believe Guterres has much to gain and nothing to lose by reaching out to Donald Trump at this critical juncture for the UN. As Schlesinger says, "Guterres owes it to his constituents, 193 countries, and the entire world to make the call. Trump has publicly invited him to do it. If he doesn’t, he’ll never know whether he could have reversed the UN’s troubled straits. It’s only a few numbers to punch on the keypad to put the call through. He should do it to preserve the institution that he has spent almost 10 years running. It will be his greatest legacy — and, if he does not, his greatest shame". I hope you and Jo...