Turkey signs landmark Russian weapons deal

September 13, 2017

This file photo taken on May 09, 2017 shows Russian S-400 Triumph medium-range and long-range surface-to-air missile systems riding through Red Square during the Victory Day military parade in Moscow. (AFP)

Turkey has signed a deal for its first major weapons purchase from Moscow to buy S-400 missile defence systems, both sides announced Tuesday, in an accord that could trouble Ankara's NATO allies.