<p>Spain's World Cup-winning goalkeeper Iker Casillas announced his retirement on Tuesday, after being sidelined for more than a year with a heart problem.</p>.<p>Casillas, 39, also won the European Championship twice with his country in a trophy-laden career which included more than 700 games for Real Madrid.</p>.<p>"Today is both one of the most important and most difficult days of my sporting life, the time to say goodbye has arrived," he said on Twitter.</p>.<p>Casillas joined Portuguese side Porto in 2015 after a tearful departure from Madrid but suffered a heart attack in May last year.</p>.<p>He played 167 times for the national team, winning trophies in 2008, 2010, 2012 in a golden age for Spanish football.</p>.<p>He lifted five La Liga titles and the Champions League on three occasions during his time at the Santiago Bernabeu.</p>.<p>In June he said he was ending his bid to run for the presidency of the Spanish Football Federation (RFEF) due to the crisis caused by the coronavirus pandemic.</p>
<p>Spain's World Cup-winning goalkeeper Iker Casillas announced his retirement on Tuesday, after being sidelined for more than a year with a heart problem.</p>.<p>Casillas, 39, also won the European Championship twice with his country in a trophy-laden career which included more than 700 games for Real Madrid.</p>.<p>"Today is both one of the most important and most difficult days of my sporting life, the time to say goodbye has arrived," he said on Twitter.</p>.<p>Casillas joined Portuguese side Porto in 2015 after a tearful departure from Madrid but suffered a heart attack in May last year.</p>.<p>He played 167 times for the national team, winning trophies in 2008, 2010, 2012 in a golden age for Spanish football.</p>.<p>He lifted five La Liga titles and the Champions League on three occasions during his time at the Santiago Bernabeu.</p>.<p>In June he said he was ending his bid to run for the presidency of the Spanish Football Federation (RFEF) due to the crisis caused by the coronavirus pandemic.</p>