Russian S-400 hardware deployment continues: Defense Ministry

Delivery of S-400 missile systems is continuing, Turkish National Defense Ministry said on July 13.
"Delivery of S-400 Long Range Air and Missile Defense Systems resumed today. The fourth Russian plane carrying S-400 parts landed at Mürted Airport outside Ankara," the ministry said on Twitter.
Following protracted efforts to purchase an air defense system from the U.S. with no success, Ankara signed a contract in 2017 to purchase the Russian S-400s.