It's unclear what effect Greece's pending F-16 upgrades might have on the country's ties with Turkey, but the often-antagonistic nature of their relationship is unlikely to change much.
The United States and Greece recently agreed to an upgrade of Greece’s F-16s at an estimated cost of $2.4 billion, although the final price hasn't been determined. The sale includes more than 120 upgrade kits from Lockheed Martin to retrofit Greece’s fourth-generation fighter jets.