He is going to use this trial as his bully pulpit in an effort to put that invasion on trial, ... But it's not really in his client's interest to try to hijack the trial and make it all about U.S. violations of international law.
He needs to cite the precedents of the Yugoslavia tribunal, the Rwanda tribunal, the Special Court for Sierra Leone, and domestic courts, which indicate that his response to the situation is perfectly consistent with international due process and fair trial standards.
This trial has not gone as anybody has hoped.