Israel gives all Jews the right to citizenship - but has it become less welcoming to African Jews? Since its founding in 1948, after the horrors of the Holocaust, Israel has seen itself as a safe haven for Jews from anywhere in the world to come to escape persecution. But now that policy is under threat. As Jewish communities in Ethiopia, Uganda and Kenya are finding, a debate has arisen about who is "Jewish enough" to qualify. David Baker investigates claims that decisions are being made not on the basis of ancestry or religious observance but on the colour of people's skin. Producer: Simon Maybin Presenter: David Baker.