39K views · 183 reactions | As Emmerson Mnangagwa is sworn in as Zimbabwe's new president, Opposition Leader Morgan Tsvangirai tells me that Mnangagwa "will have to work very hard to change his character" in order to fulfill Zimbabweans' desire for change. | Christiane Amanpour | Facebook

Sometimes TV interviews end dramatically, from standoffs to walk-offs -- sometimes even meltdowns. Here are some tips on how to keep control and get the best answers, from CNN's Christiane Amanpour. cnn.com/cnnfilmschool | CNN