Israel's intelligence corps has been rocked by a major internal protest over the treatment of Palestinians.
More than 40 former soldiers and current army reservists have signed a letter refusing future service in the Israeli Defence Force (IDF) military intelligence wing, known as Unit 8200.
Unit 8200 is often compared to the United States National Security Agency. It uses sophisticated technology to monitor the lives of Palestinians, gathering information which is then used by Israel's military. It also carries out surveillance overseas.