ALI KUCUKGOCMEN A Turkish prosecutor called for the trial in Istanbul of Saudi suspects over the killing of journalist Jamal Khashoggi to be halted and transferred to Saudi authorities, a move which comes as Turkey seeks to mend ties with Riyadh. Khashoggi's killing at the Saudi consulate in Istanbul four years ago triggered a global outcry and put pressure on Saudi Arabia's de facto ruler Crown Prince Mohammed bin Salman. A U.S. intelligence report released a year ago said the prince had approved the operation to kill or capture Khashoggi, but the Saudi government denied any involvement by the crown…