Four bankers who helped a close friend of Vladimir Putin move millions of francs through Swiss bank accounts have been convicted of lacking diligence in financial transactions. The four were found guilty of helping Sergei Roldugin, a concert cellist who has been dubbed "Putin's wallet" by the Swiss government. The executives -- three Russians and one Swiss -- helped Roldugin, who is godfather to Putin's eldest daughter, Maria, deposit millions of francs in Swiss bank accounts between 2014 and 2016. The men, who cannot be identified under Swiss reporting restrictions, were given suspended sentences of seven months each. To read the original story by Reuters, click here.