 Analysts are trying to decipher the reasons for Wan Zuls premature exit like trying to unravel the Codex Sinaiticus pic by BLOOMBERG WHEN news that Petroliam Nasional Bhd Petronas president and CEO Tan Sri Wan Zulkiflee Wan Ariffin was set to leave the state oil firm broke, the corporate grapevine was set ablaze with speculation. ... 