Turkey's purchase of the Russian anti-aircraft system has opened up a rift with the U.S., which fears the deal could compromise American military secrets.
Washington's demand that Turkey kill a deal for Russia's S-400 anti-aircraft system was "unacceptable," a Kremlin spokesman said.
The country's pacifist constitution has long prevented governments from attaining carriers.
Investigators think there could be a problem with the fuel tubes across the U.S. fleet of 245 planes.
"Any effort by the Government of the Republic of Turkey to further enhance their relationship with Russia will degrade the general security of the NATO alliance."
The Air Force must cut F-35 operation and support costs by 38 percent over the next decade.
"We proved our point," Cohen said.
Missiles that F-35 stealth fighters already carry need only slight tweaks to be able to target ICBMs, an aerial combat expert says.
The F-35B is a short-takeoff, vertical-landing aircraft.
British commissioning choices mean that the aircraft will not have the full communications capacity.
Donald Trump's recent about-face on NATO didn't influence the long-planned delivery of the U.S.'s most advanced fighter jets.
Netanyahu claimed that if the Allies had attacked the death camps, they could have saved 4 million Jews.
The Navy is going forward with plans to purchase its variant of the F-35 jet, which has been described as the most expensive weapon system ever.
Defense analyst says Trump's style of applying pressure via Twitter will be a 'significant issue' for contractors.
The costs of the F-35s have escalated to an estimated $400 billion.
Trump said on Twitter that the F-35 program's cost "is out of control" and that "billions of dollars can and will be saved" after his inauguration.
The orders will amount to about $40 billion in new revenue for Lockheed Martin.