The tensions between Uzbekistan and Tajikistan largely stem from concerns over access to fresh water. The two countries have been in disputes over the shared Vakhsh river, which is a vital source of water for both nations. Uzbekistan has accused Tajikistan of building a dam on the river that could restrict its access to water resources, leading to increased tensions between the two countries. This issue has exacerbated long-standing territorial and ethnic conflicts, fueling the tensions between Uzbekistan and Tajikistan.