Former Malaysian prime minister Najib Razak has taken to Facebook to “advise” authorities regarding the sex video, which allegedly implicated Economic Affairs Minister Azmin Ali.“Can I advise you something, those in authority? It is not difficult for the authorities to identify who are the individuals in the sex video. That is, if you truly want to,” he said in a Facebook post on Thursday.Najib said this sarcastically after several audio recordings were revealed by the Malaysian Anti-Corruption…