KHAN YOUNIS, Jan. 31 -- Israel released 110 Palestinian prisoners on Thursday after eight hostages in the Gaza Strip were freed by militants earlier in the day in a sometimes chaotic process that briefly called the exchange into question and underscored the fragility of a ceasefire that began this month. The prisoners released include 30 serving life sentences for deadly attacks against Israelis. Some are allowed to return to the occupied West Bank, while those convicted of more serious crimes are being transferred to Egypt before further deportation....