[Editor’s Note: The Mekong River Commission, or MRC, whose members include Cambodia, Laos, Thailand, and Vietnam, is holding its annual meeting in Preah Sihanouk through Saturday, to debate whether to allow a proposed dam in Xayaburi province, Laos. Opponents say the dam could be damaging to the ecology of the river and the livelihoods of the people who rely on it. Cambodia has yet to determine its support for the dam, Sin Niny, vice chairman of Cambodia’s National Mekong Committee, told VOA Khmer in an interview at the outset of the meeting.] Why is the decision on whether to build the Xayaburi dam so important, especially for Cambodia?