The first days of Elon Musk's Twitter have been full of controversy. The Tesla co-founder fired the company's board of directors and is planning to lay off about half the existing workforce in an attempt to cut costs.

The Supreme Court heard oral arguments this week, including those in a case involving the future of affirmative action at U.S. universities.

Meanwhile in Africa, the Ethiopian government and Tigrayan forces have agreed to end a two-year conflict at peace talks in South Africa this week. The war has claimed the lives of hundreds of thousands since it began two years ago.

Far-right Brazilian President Jair Bolsonaro lost the presidential election this week to former President Luiz Inácio Lula da Silva. Bolsonaro has signaled he will hand over the country's reins without issue.

We cover all this and more during this week's News Roundup.

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