Kazakhstan replaces Burkitbayev

    Kazakhstan has replaced the chief executive officer at KazMunaiGas for the second time in three months, the company said on Wednesday.     Kairgeldy Kabyldin, 55, until now chairman of KazMunaiGas, had taken over from Serik Burkitbayev, 50, as chief executive, KazMunaiGas said in a statement.     It gave no reason for the replacement of...