The Supreme Court accepted the government’s stance Monday that nuclear whistleblower Mordechai Vanunu will have to undergo a trial period before he can leave Isreal. Vanunu served 18 years in prison for revealing Israeli nuclear secrets to a London paper, and since his release in 2004 has not been allowed to leave the country.

The government told the High Court that it would give Vanunu a half-year trial period in which he is forbidden from talking to any press or foreigners. If Vanunu passes the trial, the government will consider allowing him to leave the country.