There are a lot of possibilities here-
1.) Finalize an extradition treaty. These are common enough and protocol is well-established.
2.) Try Baradar in the interim. Minimally there'd likely be charges related to illegal immigration or non-legal resident status. If interrogation produces evidence that he's in any way connected to those committing serious crimes on Pakistani soil, he'd likely be subject to conspiracy charges as well. Malik had mentioned he'd be investigated for crimes on Pakistani soil and I concluded that the GoP had decided not to bother. I'd be surprised, however, if a serious investigation didn't reveal evidence otherwise.
3.) There's a duo precedent established of extradition to America. You sent a drug dealer we wanted in 1994 and we sent a fugative Pakistani navy admiral you wanted in 2001. The agreement reaches back to British imperial rule but seems to have been honored by both America and Pakistan. The question might be if evidence can be found of any crime against American personnel.
Interesting legal dilemma, as usual. There's a war being fought yet it appears that years later none of our criminal or military justice systems really know nor have reconciled how to proceed in the prosecution of these individuals to assure the public's safety and that the full measure of the law is rendered to their crimes.
Thanks.