What Happened: Sri Lankan President Maithripala Sirisena appointed his predecessor, Mahinda Rajapaksa, as prime minister after his political front, the United People's Freedom Alliance, left a ruling coalition with the United National Party of now-ousted Prime Minister Ranil Wickremesinghe, The Times of India reported Oct. 26.
Why It Matters: Wickremesinghe's ouster poses a potential constitutional challenge because Sri Lanka's 19th amendment stipulates that a parliamentary majority is required to remove the prime minister.
Background: The ruling coalition came to power in 2015 after Rajapaksa was unseated. The former president spent nearly a decade in power, from 2005 to 2015, and presided over the end of the country's civil war in 2009.
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