World Football in Qatar is the podcast taking you behind the scenes with all 32 teams at the World Cup.

We're meeting players, the fans and people here for the tournament, telling the truly global story of the competition.

That's World Football in Qatar from the BBC World Service. Find it wherever you get your BBC podcasts.

Thousands of fans and 831 of the best male footballers in the world are here in Qatar for the World Cup,

all hoping for glory and the sense of national pride that comes with it. But for many, that's a complicated concept.

137 footballers spread across 28 of the 32 teams will play for a nation different to the one in which they were born.

How? Well, more and more players are enjoying dual heritage, meaning they've taken a difficult decision about whom to represent.

I manage Asmi, and this is which country should I play for on BBC World Service.

When it comes to what makes players eligible to represent a national team, FIFA World Football's governing body has three criteria.

They can represent if they were born in the country, if a parent or a ground parent is from the country, or if they've been resident in the country for a certain number of years.

Since 2020, additional rules have allowed players to switch national teams, as long as they didn't play more than three matches for their first nation before the age of 21, and none in a major competition.

But once you cross that white line at the World Cup, that's it. No going back.

Time for training, and the drills and repetitions hated by most players, but which might make the difference in the end.

But before arriving in Qatar, many players and some coaches will have had to double check just to make sure they were taking the right passport.

Garner's coaching staff, for example, are mainly Garnians with dual heritage.

A system coach George Blatteng was born in Garner, but played for the Netherlands, whilst Otto Ado was born, raised and played his entire club career in Germany, but represented Garner.

He's now the head coach and knows all about the complexities of deciding which country should I play for.

I can understand this is a difficult decision, especially if you were born in another country and you're young, and you have to choose to be a player.

You have to choose to play for either this nation or that.

This is not a decision like on the club stage where you can sign maybe for one to three years, and then after the things doesn't work, you can go to another club.

It's a lifetime decision, so it's very difficult. Me being born in Germany, maybe I can't even understand more of that thinking.

But surely you want those who decided to play for Garner to get familiar with the teams, with the staff, and so everybody who wants to join has to join now, and they know exactly what they're going to do.

...