when he returned, he was interrogated again. In 1985, Vanunu reportedly joined the Israeli Communist Party. Vanunu later claimed that he had developed a very close friendship with an Israeli Arab, and after a year, discovered that his friend was being paid to spy on him. Gathering evidence Vanunu graduated from Ben-Gurion University in 1985 with a BA in philosophy and geography. In early 1985, he lost his job following a mass layoff of workers due to government cutbacks, but his labor union won him his job back. After he resumed working at the facility, Vanunu secretly smuggled in a camera and covertly took 57 photographs. He quit his job on 27 October 1985, due to repeated efforts by his superiors to transfer him to tasks that were less sensitive than his previous positions at the facility. He was given severance pay of $7,500 and a reference letter praising his work and describing his departure as a layoff. On 15 April 2015, The National Security Archive of George Washington University published documents corroborating Vanunu's statements regarding the Dimona Negev Nuclear Research Center. The archived documents detail the discovery of Israel's nuclear deceptions, debates over Israel's lack of candor and efforts to pressure the Israelis to answer key questions about the Dimona facility. Disclosure, abduction and publication After leaving his job, Vanunu started attending Israeli Communist Party meetings, but was unimpressed with the level of discussion and soon stopped going. He also tried modeling nude for art students but was not booked again for being too nervous and jumpy. In November 1985, he moved in with Judy Zimmet, an American woman who was working as a midwife at Soroka Medical Center. After accompanying Zimmet and her sister on a tour around Israel, he embarked on a backpacking trip throughout the Far East, and planned to meet her in the United States afterwards, though he later became uncertain about continuing the relationship. On 19 January 1986, he left Israel for Greece via a boat from Haifa to Athens. After spending a few days in Athens, he flew to Thailand on an Aeroflot flight to Bangkok. He transited through Moscow, spending a night at a transit hotel there. During his time in Thailand, he visited the Golden Triangle, where he tried opium and hash cocktails. He then flew to Myanmar, where he met and befriended Fiona Gall, daughter of British journalist Sandy Gall.