Football and politics are often inextricably linked.
Cameroon President Paul Biya took a personal involvement in his country's 1990 World Cup campaign, first coaxing Roger Milla out of retirement and then utilising the team's unprecedented performance to boost his public support against a backdrop of economic problems.
Most politicians don't go quite so far, though. Many are just average football fans, watching on with excitement, or horror, just like any one of the voters they govern would do.
Here's a look at nine current world leaders and the clubs they support.
1. Barack Obama - West Ham United
Barack Obama was an impressionable teenager when the original version of the NASL was at the peak of its popularity, so it's not a shock that he would have at least a passing interest in soccer.What is surprising though, is that the team of choice for the world's most powerful man should be West Ham.
There's not really any definitive proof other than a passing comment, but rumour has it that Obama developed an affinity for the Hammers on a trip to visit family in London during his days as a member of the Illinois State Senate back in 2003.
2. David Cameron - Aston Villa
Aston Villa can count several famous faces among its support, including Prince William and Tom Hanks, as well as British Prime Minister David Cameron.Cameron was born and raised in the south-east of England, but as a 13-year-old it was Villa Park that was the setting for his first ever football game, taken along by his uncle, Sir William Dugdale, who was the club's chairman at the time.
He has remained a fan ever since and offered his congratulations by way of a tweet when his team reached this season's FA Cup final. Unfortunately, a few days later Cameron seemed to forget who he supports when he oddly claimed it was West Ham in a momentary lapse.
3. Vladimir Putin - Zenit St Petersburg
Zenit St Petersburg are popular at the top of Russian politics, with the club able to count President Vladimir Putin and Prime Minister Dmitry Medvedev among its powerful fans.
In 2012, Putin stood up for his club when it was heavily criticised for spending large amounts on star duo Axel Witsel and Hulk, commenting that it is what the fans want to see.
It has also been rumoured that Zenit actually want to name their new stadium the 'Putin Arena' when it formally opens in 2016.