S-400 missile defense systems

Russia plans to deliver another batch of S-400 systems to Turkey
41 US Representatives urge Blinken not to sell F-16s to Turkey
White House expects Biden, Erdoğan to meet in Glasgow
Erdoğan says he will discuss F-35 jets with Biden in Glasgow
Erdoğan says US proposed F-16 sales in return for its F-35 investment
Erdoğan says Turkey's frictions with US were 'worth it'
Turkey purchased S-400s 'because US didn't sell Patriots'
US Senate Foreign Relations Committee warns Turkey of new sanctions
Turkey, US back to S-400 quagmire after Erdoğan vows to get 2nd batch
Arnold & Porter extends lobbying contract for Turkey on F-35 program
Turkey insists on purchasing 2nd batch of Russian S-400s
Russia, Turkey to sign new deal on S-400 delivery soon
Erdoğan says he told Biden Turkey is not shifting stance on S-400s
Lira weakens after Erdoğan says stance on S-400s remains unchanged
Erdoğan to discuss Turkey's return to F-35 programme with Biden
Turkey deems calls for not using S-400s 'unacceptable'
Bahçeli calls on gov't to make S-400s operational in response to Biden
US sanctions against Turkey over S-400s to take effect on April 7