Apple Inc.’s top executive for South Korea is leaving the iPhone maker for a job in the U.S. amid a dispute with the country’s government over App Store rules, according to people with knowledge of the situation. 
Brandon Yoon joined Apple as its general manager and head of sales for South Korea in 2018 after serving as an executive at Microsoft Corp. in the U.S. and later Samsung Electronics Co. In his role at Apple, Yoon managed sales in the country, taking on Samsung on its home turf. 

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