( CNN) The first shipment of the Russian-made S-4 00 air defense missile system has landed in Ankara, in a move that sets up a potential showdown between Turkey and the United States.
Another plane is due to fly to Turkey with a second batch of equipment in the near future, a military-diplomatic source told Russia's state-run TASS news agency. That source added that a third delivery, carrying over “1 20 anti-aircraft rockets of various types” will be delivered “tentatively at the end of the summer, by sea.”
TASS also quoted the source saying that Turkish S-4 00 operators will travel to Russia for training in July and August. About 20 Turkish servicemen underwent training at a Russian training center in May and June, according to the source.
