US removes Turkey from F-35 fighter jet programmeBBC, Jul 17, 2019
The US says it is removing Turkey from its F-35 fighter jets programme, after Ankara received the first parts of a Russian missile defence system.
The US says the "F-35 cannot coexist with a Russian intelligence collection platform that will be used to learn about its advanced capabilities".
Russia began delivering its advanced S-400 system to Turkey last week.
Turkey and the US are key Nato allies - but Ankara has also been establishing closer links with Russia.
Turkey has so far not publicly reacted to the latest US move, which was widely expected.
More:
https://www.bbc.com/news/world-us-canada-49023115
