A dam project along the Mekong River in Laos is causing tension with neighbouring Vietnam and Cambodia who fear the environmental impact.

Both nations are downstream from the Xayaburi dam, where work is continuing despite their protests and promises by the Laos government that work would be suspended until November.

Al Jazeera's Harry Fawcett reports from province on the fears that the dam will affect migratory fish species and the flow of nutrient-rich sediment downstream to both Vietnam and Cambodia.