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

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Before I went to Ho Chi Minh City, I was given lessons on how to cross the road.

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Shortly after meeting Le through a friend, he teamed him with a serial entrepreneur from Los Angeles, Bryan Pelz, who had moved to Ho Chi Minh City eight years ago to work with IDG on building businesses.

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Electricity supplies in Ho Chi Minh City and in Phnom Penh were affected before power was restored on Thursday.

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