Most at risk is Ho Chi Minh City on the Saigon river, just north of the Mekong.

ECONOMIST: The threat grows from rising water and sinking buildings

The building boasts views of the Saigon River, full back-up electricity, centralized air-conditioning, direct phone lines and high-speed lifts.

CNN: MARKET HIGHLIGHTS

In a Ho Chi Minh City office near the Saigon River, I interviewed another Vietnamese entrepreneur with a story that has echoes of China start-ups in it.

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