He's got the MACEDONIAN FLAG on his wall!
If our priceless neighbours see the pic,they'll immediatelly jump on the conclusion that Roger Federer is of Macedonian ancestry just like Barack Obama,Michael Jackson,Alexander the Great,the first man on Earth,God* and so on.
*actually,since Fed is God it's been already known,just confirmed.
That flag is odd. Why would he be supportive of FYROM (especially at that age, and having no ties to that region)?