Andrei Suslenkou, director for ideological work at the Minsk Tractor Factory, is proudly showing off the benefits his company offers, at low or no cost, to more than 30,000 workers and retirees. At the plant’s health clinic, 560 doctors and staff use sleek Western equipment to provide care from routine checkups to surgery, including laser eyesight correction. A Palace of Culture opposite the factory’s ornate, Stalin-era gates includes a plush theater wired for light and sound. It just hosted a concert in honor of the “Day of Machine Builders.” Outside the capital, a woodland sanatorium provides cures, vacations, and ...