The Baltic city of Vilnius, which served as the backdrop for the HBO limited series, is located just 25 miles away from a nuclear-power facility in Belarus that many consider to be unsafe. "The government is buying 900,000 euros ($1 million) of iodine tablets in the event of a radiation leak, which could affect a third of Lithuania’s 2.8 million population," reports Bloomberg's Milda Seputyte. "Nationwide drills will be held to test readiness should the unthinkable happen."