Bangladeshi engineering student Noyon Ali, 22, serves ice-cream and fruit juice at a stall on a hot, dusty roadside to Russian customers, using a menu translated with an online app. He moved across the Padma River to Rooppur to benefit from the arrival of Russians working on the construction of Bangladesh’s first nuclear power plant in the north-central town nicknamed “Russpur” (the Russian town) by locals. “Many restaurants, beauty parlours and commercial establishments have sprouted in this place to cater to the influx of Russians, as well as people from various parts of Bangladesh working on the nuclear power project,”...