The Barcelona star insists "football is not just about effort" and has defended his decision to not sing the national anthem before games.
Lionel Messi has spectacularly hit out at those who have criticised his performances for Argentina and also admits he is frustrated by people who are unhappy with his decision to not sing the national anthem.
The Barcelona forward has reached two finals in the last two years with Argentina but ended up on the losing side on both occasions as Germany lifted the World Cup in 2014, while in July, Chile sealed victory in the Copa America via penalties.