It will be interesting to see if the government lets this case play out in court. Doubtless the powers that be would love to see the former PM subpoenaed to testify and how nice if the trial took place in the months leading up to the 2019 election. 

Of course, the fact that the Khadr case might have played out in the months leading up to the next election had nothing to do with the government's precipitate haste to settle that.