![The Russian President Vladimir Putin and the Turkish counterpart Recep Tayyip Erdogan sign agreement in Ankara, on April 3, 2018 on S-400 system and nuclear](https://avionews.it/resources/originals/f4a8049de195e56fd82dbac8debadb64.jpg)
Caption:
The Russian President Vladimir Putin and the Turkish counterpart Recep Tayyip Erdogan sign agreement in Ankara, on April 3, 2018 on S-400 system and nuclear
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CLARA MOSCHINI
The Russian President Vladimir Putin and the Turkish counterpart Recep Tayyip Erdogan sign agreement in Ankara, on April 3, 2018 on S-400 system and nuclear