It's going to be a crazy week. Key government officials - including several national security experts who listened in on the controversial July 25th Trump-Zelensky call - are set to testify in public. But the most anticipated witness is Ambassador to the European Union Gordon Sondland. Will he directly implicate the President in the pressure campaign at the heart of the inquiry? Plus, the House is investigating whether Trump lied to Robert Mueller. How does that impact impeachment proceedings? Zachary Wolf, senior writer and publisher of the Impeachment Watch Newsletter, guests hosts and previews the wild week ahead with CNN Senior National Correspondent Alex Marquardt and CNN Legal Analyst Michael Zeldin.To learn more about how CNN protects listener privacy, visit cnn.com/privacy

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