Eyad Abu Arga is a Palestinian refugee who holds Australian citizenship.
He was detained in April after flying to Tel Aviv with his wife on what he claimed was a holiday.
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But Israel alleges he was recruited to carry out espionage while working in Saudi Arabia.
According to a plea bargain, he met some people and then he learnt one or two of them were members of Hamas.
He has admitted to carrying out surveillance while in Israel - and his guilty plea is in return for thirty months in jail.
Emma Hannigan has this report.

