Vallandigham's seditious rhetoric became so volatile that General Ambrose Burnside, commander of the geographical area where Vallandigham was operating, had him arrested.
Lincoln realized that prosecuting Vallandigham for treason was a no-win situation, yet he had to do something to stop Vallandigham from further hurting the Union cause and getting Union soldiers killed.
Lincoln's solution? He had Vallandigham escorted into Confederate held territory, where he could be with those who Vallandigham held in his sympathy.
I wonder how much Durbin would enjoy being escorted to the Iranian border?
Sounds good to me