Asked about buying more S-400 systems, Turkish President Erdogan says Ankara will make its own defense choices

In briefing to journalists on sidelines of UN General Assembly, Turkish president accuses US of dishonesty

Suspects, linked to opposition figure Gulen, are accused of helping gunman who was killed by special forces shortly after he assassinated ambassador Andrei Karlov in Ankara

Pompeo says move shows America will not tolerate significant transactions with Moscow's defense and intelligence sectors

Turkish president defiant in the face of US sanctions if it activates advanced air defense system, 'America’s stance is absolutely not binding for us'

Turkish media says Russian-made air defense system test-fired in Black Sea area; US Department of Defense says if true, act violates Ankara's commitments as US and NATO ally

Agreement sees end to hostilities beginning at midnight along existing battle lines, as well as joint patrols to stem bloodshed in war-torn Idlib province

Ankara confirms incident, says it also hit Syrian air defenses after its drone was downed; 4 crew members reportedly eject safely over Idlib

NATO and UN urge deescalation after dozens of Turkish troops killed in airstrike; nearly 1 million flee Idlib violence, hundreds skirmish with Greek police at border

As the two countries find themselves on opposite sides of the fighting in Idlib, experts say both wary of further military conflict due to economic, energy ties