A rumour has been circulating for several months in the upper echelons of the Congolese government. It suggests that, during his frequent trips to Paris, DRC president Felix Tshisekedi's special investment adviser stays in the French capital's smart Avenue Montaigne, a short distance from the Elysée Palace, in an apartment belonging to the family of Denis Sassou Nguesso. In 1995, when he was in exile in Paris, the head of state of the Republic of Congo set up his headquarters in the avenue to prepare