France's richest man, billionaire LVMH boss Bernard Arnault arrives in court in Paris where he is due to testify in the trial of the former head of France's domestic intelligence agency Bernard Squarcini, who is suspected of using his security contacts for private gain, including on behalf of Arnault. Some allegations relate to spying on then journalist Francois Ruffin -- now a leading left-wing lawmaker -- and from 2013-16 the leftist newspaper Fakir that Ruffin founded. IMAGES AND SOUNDBITES (COMPLETES VIDI36NC9LD_EN)