For more than a decade, the Greek island of Lesbos has been a symbol of Europe's migration crisis. Located close to Turkey, the island was a major entry point to the European Union back in 2015. But since then, arrivals have sharply decreased as Europe has tightened its border controls and outsourced part of its migration policy. Mortaza Behboudi reports from Lesbos, where refugees have often suffered a traumatic journey.