What to know

• 'It was not an easy decision because some decisions are not made with the mind alone. They are also made with the heart,' Ronaldo said in a long video message on social media.S1
• Cristiano Ronaldo has retired from international football and one former Man Utd colleague believes he could return to the club one day.S2
• The legendary captain of the Portuguese national team brought his international career to an end with a surprise announcement on social mediaS3