The mistrust between the two Koreas is so deep that there are more sceptics than enthusiasts over North Korea's involvement in the Winter Olympics.
In these Olympics more than most, there is less global attention on the medal count than on who will win the politics.
Doping scandals have dominated the build-up to the 2018 Pyeongchang Olympics.
History shows Olympic Games have only very limited ability to promote peace between warring nations.
The Olympics have been plagued by doping, corruption and political problems. But academic and former Olympian Bruce Kidd says the Olympic Games are still an important humanitarian movement.
Tennis should be a more regularly accessible sport for more children. That's where we find more Johanna Kontas, Heather Watsons and Andy Murrays.
A delicate truce between North and South Korea has been reached in the run up to the Winter Olympics. It's a high profile win for an event which is struggling to remain relevant.
Wrist injuries forced some of the top players to miss out on this year's Australian Open. It's an ongoing problem and such injuries are partly to blame on how players grip their racquet.
Roger Federer and Rafael Nadal are two of the greatest tennis players in recent years at the Australian Open. So what makes them stand out from the rest?
In a sporting diplomatic coup, North and South Korea will march under a unified flag at Pyeongchang 2018.
Regis will be remembered as one of the most powerful examples of English professional football, and as a model for black inclusion and equity in sport and social life.
Some of today's top tennis players are playing more games and at an earlier age than the court stars of yesteryear. And that can lead to injuries.
Grunting in tennis can be performance-enhancing for the grunter and performance-hindering for their opponent.
Sporting extravaganzas are a way for globalising cities in emerging market economies to try and play the "modernity game". But they don't make the rules, and so they can never "win".
One way to get beyond gender barriers in sport would be to scrap sex segregation and replace it with a system similar to that of Paralympic disciplines.
Many sports leagues have salary caps and drafts to maintain competition, but they not only hurt players but aren't that effective at keeping fans.
North Korea sending a delegation to this year's Winter Olympics in South Korea may be a global shadow puppet show – or it might help thaw the frozen relations between the two countries.
Footballers and other sports stars are the giants of social media, amassing millions of followers. But does it provide value for money and will the relationship last?
In the final episode of our three-part cricket video series, we look at bowlers and how they find their rhythm and develop a game plan, and why left-armers are so successful.
It might be cold and dark, but that's good news for your pooch and for you if you want to improve your fitness and exercise more.