Russian President Vladimir Putin shakes hands with Turkish President Recep Tayyip Erdogan during their meeting in the Black sea resort of Sochi, Russia October 22, 2019.

Video. Why did Erdogan come to meet Putin? Clue: It's about Syria...

Turkey will resume military operations "with determination" after a US-brokered ceasefire expires later on Tuesday if promises given by Washington have not been kept, President Tayyip Erdogan said ahead of the visit.

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