US-Turkey ties at risk over F-35 jets

Aircraft issue highlights 'tangle' of problems between the NATO allies

ANKARA - The US attempt to block the delivery of F-35 fighter jets to Turkey has put the bilateral ties between the two NATO allies at risk, said an aide to Turkish President Recep Tayyip Erdogan.

In 2014, the Turkish government placed an order for the first two jets in a projected fleet of 100 F-35A aircraft.