Pardon Mohammad Afzal.
Not because he deserves it.Clearly, he does not.
When Mohammad Afzal was recruited, he was probably told that he might perish in the mission and should he get killed he would attain Jannath (virgins and all that).If he got arrested and hanged, well he would still attain Jannath.
By hanging Afzal now, we are probably giving him what he wants. Does granting someone what he wants amount to punishment ?
Enough hype has been created by the media. A hanging if it were to be happen would probably even by covered live and broadcast internationally. And produce counter-productive results!Afzal's death by hanging is likely to infuriate and hence motivate jehadis-in-the-making. It might even be cited by terrorism trainee recruiters to promise the Jannath.
Commute the sentence to life-imprisonment. Teach him Yoga, Art of Living. There exists an outside chance that he might be reform. If he doesnot, he will still possibly lead a miserable life and would still not have achieved Jannath.