"The pace of arrivals have been steadily increasing in recent weeks. More refugees and migrants arrived in Greece during the month of July - 50,242 - than during the whole of last year," William Spindler of the UN High Commissioner for Refugees (UNHCR) told a Geneva news briefing.
Hundreds of Syrian refugees on Kos boarded a passenger ship chartered by the government on Sunday that is to house and process them, aiming to ease chaotic conditions onshore, where many are living in tents or cardboard boxes.
The government of Alexis Tsipras is grappling with an economic crisis but has responsibility to do more, and the European Union must also support Athens, the UNHCR said.
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