The increased cooperation is not the result of warm relations between Israel & the PA, anti-Israel incitement continues in PA mosques & schools. Hamas is threatening the Fatah's survival & they already kicked them out of Gaza. The PA also finally realized that terrorism hurts them the most.
Some 200 settlers clash with police preparing to demolish illegal Beit El homes (Haaretz)
from the article: West Bank most-wanted terrorist list has dwindled to almost nil