The key word is "political". Political prisoners, Palestinians who have never harmed anyone and many of whom have never been formally accused or tried. I would like to have seen the convicted killers stay in jail and the political prisoners released. But sadly Hamas would never have gone for that. And let's also bear in mind that for all their monstrosity, even at the height of the terrorist attacks, the IDF killed more Palestinian civilians than these prisoners and their friends killed Israelis. For example, 971 children died in I/P between Sept 2000 and July 2007. 88% of these were Palestinian. And if your reaction is some version of "it's their own fault" then you're no better than Hamas, who also blame their victims.
Report in Lebanon: Israel Air Force strikes Syria's Quneitra, 3 terror operatives killed (Haaretz)
from the article: Bravo for these people, these Israelis