UPDATE 1-Turkey stands by S-400s, says F-35 partners disapprove of U.S.

Turkey has purchased Russian missile defences and is discussing a delivery date irrespective of any U.S. sanctions, Foreign Minister Mevlut Cavusoglu said on Monday, adding the United States is isolated as it also squeezes Turkey on F-35 jets. The Pentagon announced earlier this month that training by Turkish pilots on F-35 fighter jets had been halted at a U.S. air base in Arizona following Turkey's purchase of Russian S-400 defence systems. Washington says the S-400 is incompatible with NATO's defence network and could compromise its F-35 fighter jets, an aircraft Turkey is helping build and planning to buy.