Almost two decades have passed since the end of the Cold War, but an unexpected chill has hit world relations. In this two-part series produced for the BBC World Service, Tim Whewell looks at recent issues that could re-draw the old fault lines that once divided East and West.
PART 1
In this documentary produced for the BBC World Service, Tim Whewell discovers why Russia and the US are in danger of embarking on a new arms race.
PART 2
In April last year, history came tapping on Estonia's shoulder - an old quarrel with Russia was about to be pursued by the most modern means. Estonia believed that the Russians were behind a cyber attack that temporarily paralyzed their computer network. Tim Whewell reports on how Russia seems to be looking back to the days of the old Soviet Union -- and playing by its own rules.
THE CHANGING WORLD is the sister documentary series of PRI's The World. Each week, we offer American radio listeners two in-depth documentaries from the BBC World Service that probe issues critical to our understanding of our evolving world.