Why Israel is freeing Khader Adnan
From the New York Times (emphasis added):
In making the deal, Israel averted the possibility of widespread unrest that many expected if the detainee, a 33-year-old member of Islamic Jihad, had died, as medical experts had determined was an imminent danger. More important, it forestalled an emergency hearing at the High Court of Justice that could have set off a broader review of Israeli military courts’ practice of administrative detention, which has been used against thousands of Palestinians over time.