"I don't know how many more people need to die at sea before something gets done," said Malta's Prime Minister, Joseph Muscat. "As things stand, we are building a cemetery within our Mediterranean Sea."
He was talking about the part of the Mediterranean between the North African coast and the two islands that are the closest bits of the European Union: the Italian island of Lampedusa and his own country, Malta. In the past two weeks, almost as many migrants have died in that narrow stretch of water - only 120km separate the Tunisian coast from Lampedusa - as died along the US-Mexican border in all of last year.
On the southern US border they mostly die of thirst in the desert; in the Mediterranean they drown. The migrants pay the people smugglers in Libya or Tunisia thousands of dollars each to make the crossing in small, unseaworthy, grossly overcrowded boats, but the smugglers don't go with them. They don't want to get arrested at the end of the journey. They just hand over the keys to the migrants.
The refugees - more than half of the 32,000 who have reached Italy so far this year come from Syria, Somalia or Eritrea - have no experience at sea. The boats leak, they run out of fuel, they catch fire, and nobody knows what to do about it. In many cases, the boats just capsize when everybody rushes to the same side to call for help from a passing ship or aircraft.
Then they are in the water, and of course there are no life-jackets.