The United States said on Wednesday it would exclude Turkey from the F-35 fighter jet program, a move long threatened by Washington and was expected after Ankara began receiving a sophisticated Russian missile defense system last week.
The White House said Turkey's decision to purchase the S-400 missile defense system makes it impossible to continue its participation in the F-35 fighter program.
"The F-35 can not coexist with a Russian intelligence gathering platform that will be used to see its advanced capabilities," the White House said in a statement.
He also stated that the relationship with NATO member Turkey was "multi-layered" and that cooperation would continue "taking into account the limitations due to the S-400 system."
"The acceptance of the S-400 undermines the commitments made by all NATO allies to each other by avoiding Russian regimes," the statement said.
The first parts of the S-400 air defense system arrived at a military base northwest of Ankara on Friday, in line with Turkey's deal with Russia, which the United States has sought for months to prevent.
"The United States and its partners in the F-35 program are in agreement to suspend Turkey's participation in the program and start a process of formally excluding it," said Secretary of Defense for Procurement Ellen Lord.
The Pentagon has already taken steps to get Turkey out of the F-35 program, but has continued to encourage Ankara to back down from its decision to receive the S-400.