On Saturday, Secretary of State Mike Pompeo expressed disappointment to Turkey's foreign minister over its decision to complete the purchase of a Russian missile system, despite warnings from the U.S.
According to the State Department, Pompeo spoke to Mevlut Cavusoglu over the phone, expressing concern over the defense acquisition as well as the security of the Turkish border with Syria.
The U.S. has been upset with Turkey over the Russian S-400 air defense system because it believes the system could potentially collect information about the U.S.'s F-35 jets. On Wednesday, the U.S. removed Turkey from its fighter jet program. President Donald Trump also contemplated placing sanctions on the country.
"We're looking at it. We're looking at it. Very, very difficult situation for a lot of reasons. Things could have been done better in the previous administration. The previous administration made some very big mistakes with regard to Turkey. It was too bad, so we're looking at it we'll see what we do. We haven't announced that yet," said President Trump.
On Thursday, a spokesman for Turkey's president responded with unease over the decision in a conversation with National Security Adviser John Bolton.
Additional reporting from Newsy affiliate CNN.