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Iker Muniain made 59 appearances for Spain at the youth level. He made his debut for Spain U17 in 2007 and went on to represent Spain at the U17, U19, U20, and U21 levels. He helped Spain win the 2008 UEFA European Under-17 Championship and the 2011 UEFA European Under-19 Championship. He also represented Spain at the 2011 FIFA U-20 World Cup and the 2013 UEFA European Under-21 Championship.