Insua was given his Argentina debut by current boss Diego Maradona
Liverpool defender Emiliano Insua admits he has one eye on the World Cup finals in South Africa next year.
The 20-year-old won his first cap for Argentina in their last gasp victory over Peru in October.
Insua told BBC Radio Merseyside: "It was very special to play because it was a crucial time for my country.
"I will never forget that I helped them to qualify for the World Cup, but I know I have to keep working hard for Liverpool first, then my country."
Insua, who has been left out of the Argentina squad for Saturday's friendly with Spain, has made the left-back position at Anfield his own this season after injuries to Fabio Aurelio and Andrea Dossena.
The Under-20 World Cup winner admits: "It's been a very good season for me, I've played 16 games already, but I want to play more.
"I always want more, but the only thing I can do is keep working hard and look to the future."
He added: "For every player, to play for your country is really special and I want to play in South Africa next year, but Liverpool comes first and if I play well for my club, then I hope that more games for Argentina will follow."
Insua, who will turn 21 in January, scored his first goal for Liverpool in the Reds 2-1 Carling Cup defeat at Arsenal last month, and accepts the Reds haven't played well in recent weeks.
"We haven't had much luck in recent games. In the Champions League we conceded two late goals against Lyon, and in the Premier League we've conceded too many goals from set pieces despite controlling most games."
He added: "I think we have enough time to change things around and finish the season as high as possible.
"We just have to keep working hard and I'm sure that everything will change."
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