Turkey pressured over S-400, Greece meets NATO target

The US is ramping up the pressure on Turkey, a NATO ally, over its decision to purchase S-400 surface-to-air missile systems from Russia.
Testifying before the House Armed Services Committee on Wednesday, General Curtis Scaparrotti, head of US European Command and NATO's supreme allied commander, said the US should not sell Lockheed Martin F-35 jets to Turkey if Ankara does not drop plans to buy the Russian systems.
"I do believe that we shouldn't provide F-35s if there is an S-400 in Turkey," he said.
Washington says that the S-400s are not interoperable with NATO systems and would compromise the security of the F-35.
Asked about the issue Thursday, a State Department spokesperson reportedly pointed to recent remarks by Vice President Mike Pence at the Munich Security Conference in February that the US would not "stand idly by while NATO allies purchase weapons...