A growing number of refugees arriving in Israel from Sudan's Darfur region have created a crisis - as Sudan is considered an enemy state
The Israeli government is holding 220 of them in prison cells, army bases and remote kibbutzim.
And it believes many more may have entered the country undetected, using Bedouin smugglers to take them across the unfenced border. The influx has accelerated sharply in the past six months as violence rages in Sudan.
Fighting in the western Darfur region has created two million refugees.
One of the refugees who crossed into Israel, Sanka, said: "There were Israeli and Egyptian soldiers on both sides. I could have been shot at any time as that place is a firing zone."
He is now taking refuge in a kibbutz overlooking the crystal waters of the Dead Sea.
Holocaust campaigners have taken up their cause, saying Israel, of all countries, should give refuge to people fleeing genocide.
"We cannot ignore refugees of the Darfur genocide when they knock on our door," said Avner Shalev, the director of Israel's Yad Vashem Holocaust Memorial.
Michael Bavly, representative of the UN High Commissioner for Refugees in Israel, said one solution could be to change Israeli law to distinguish "between an enemy citizen who is a perpetrator and an enemy citizen who is a victim".
Sudan executes people who flee and then return, and Israeli foreign ministry spokesman Mark Regev said that, at least, was something Israel wouldn't condone.
"We are working with the UNHCR to try to find a humanitarian solution for these people," he said.
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