A California court ruled...that Facebook must turn over information about how it works with Cambodian Prime Minister Hun Sen, the popular strongman accused of using his Facebook popularity to push state propaganda and silence opposition voices.  The decision could reveal how closely Facebook works with repressive regimes like Hun Sen's, and whether it gives such governments special treatment to promote their agendas.  Cambodian activist and opposition leader Sam Rainsy filed the lawsuit against Facebook in February in a bid to show how Hun Sen has misused the platform by buying fake likes to prop up his regime...Facebook has rebuffed Rainsy’s demands...arguing that handing over Hun Sen’s private communications and account activity would be in violation of U.S. privacy law.  But U.S. Magistrate Judge Sallie Kim wasn’t swayed by the Silicon Valley giant and ruled in the Cambodian opposition leader's favor...Rainsy’s lawsuit could expose in new detail the extent to which Cambodia’s government abused the platform and just how closely it worked with Facebook in the process, experts recently told VICE News...Facebook didn’t immediately respond to a request for comment.  But...[i]n a court filing..., it signaled its intentions to block the lawsuit...In subsequent court filings, Facebook said Rainsy has not proven that he can use the information he is seeking in a foreign legal action...”...