Tajikistan’s existential project to build the colossal 335-meter-high Roghun hydropower dam is proceeding apace, but costs are spiraling, and to a level that is making it hard to see where the government is going to find the funds needed to finish the work. To complicate matters for Dushanbe, this is happening against the backdrop of calls from environmental watchdogs for international development lenders to pause the allocation of any future funds to Tajikistan pending a fresh assessment of the project. The extent of the budget overshoot…