It is all in the balance...

Haaretz article of December 3, 2007:

Israel on Monday began to release 429 Palestinian prisoners, a gesture meant to strengthen Palestinian President Mahmoud Abbas after both sides decided at last week's U.S.-sponsored Mideast conference to try to reach a peace deal by the end of 2008.

From Haaretz ticker tape on the same day:

06:05 IDF arrests 42 wanted militants across the West Bank overnight (Army Radio)

See: nine days more and they are all back...