Elon Musk takes over Twitter

he world's richest man, Elon Musk, has completed his $44bn takeover of the social media firm. CEO Parag Agrawal and a number of top executives have reportedly been fired and escorted out of the San Francisco headquarters as part of the deal. We hear more from the BBC’s business correspondent in New York Michelle Fleury. Brazilians will go to the polls on Sunday to elect their next president in a runoff between left-wing former president Lula da Silva, and right-wing incumbent Jair Bolsonaro. The BBC’s correspondent in Brazil Camilla Mota reports on the role poverty is playing ahead of the elections. Amazon has projected the slowest holiday-quarter growth in the company’s history. The tech firm had been expecting to make 155 billion dollars, but it has now reduced that figure to between 140 and 148 billions. Neil Saunders, managing director of GlobalData Retail, in Arizona, tells us more. And Rihanna has released a new single after six years. Carl Lamarre, deputy head of Hip Hop and RnB at Billboard, joins us to discuss what she’s been up to during that time.