Migrants stand on the dock after disembarking from the Norwegian vessel Siem Pilot in the Sicilian harbour of Palermo, southern Italy, April 13, 2016. REUTERS/Guglielmo Mangiapane

Migrants stand on the dock after disembarking from the Norwegian vessel Siem Pilot in the Sicilian harbour of Palermo, southern Italy, April 13, 2016. REUTERS/Guglielmo Mangiapane

 Migrants stand on the dock after disembarking from the Norwegian vessel Siem Pilot in the Sicilian harbour of Palermo, southern Italy, April 13, 2016. REUTERS/Guglielmo Mangiapane

Migrants stand on the dock after disembarking from the Norwegian vessel Siem Pilot in the Sicilian harbour of Palermo, southern Italy, April 13, 2016. REUTERS/Guglielmo Mangiapane

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