Let's turn to Vietnam -- where the stock market has been on a rollercoaster ride for a week.
That's because one of the country's most powerful bankers -- was arrested last Monday, for undisclosed financial crimes.
Nga Pham is with the BBC's Vietnam Service explains in the audio above how one extremely well-connected guy can cause all this market turmoil.
"The trust in the Vietnamese banking industry is not very high," Pham says.
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