Athens did something similiar years ago.
The Trump administration has signaled its intention to kick Turkey out of the F-35 program. White House press secretary Stephanie Grisham said, in a statement on Jul. 17 that the country’s involvement in the program has become “impossible.”
“Unfortunately, Turkey’s decision to purchase Russian S-400 air defense systems renders its continued involvement with the F-35 impossible. The F-35 cannot coexist with a Russian intelligence...