Cancel Russian defence system order or lose out on F-35 jets, US warns Turkey

The United States has told Turkey that it will not receive its purchase of F-35 fighter jets if the Turkish government goes ahead with a deal to buy a Russian missile defence system.The latest escalation in the US-Turkey dispute came as Russian state-owned defence corporation Rostec announced it would begin deliveries of S-400 air defence systems to Turkey in two months, following a long-running conflict between the US and Turkey about the system's compatibility with the F-35.The US has warned t