This just in: Avi Dichter of the Shin-Bet (= Israeli FBI) says that if the IDF fully exits the Palestinian Authority areas there will be another spike in terror attacks. He said that about 40 attacks have been prevented in the past few weeks - most of them planned by the Tanzim militia. The terror fellows who are in jail and being observed by American and British wardens are being permitted unlimited visitors.

Haaretz and Jpost differ over whether Dichter advocated erecting a security fence around the West Bank or merely "buffer zones".

Some people oppose the "security fence" because it isolates the settlement communities. Also it's not clear exactly what the "fence" accomplishes, since terrorists often attempt to sneak through (rather than "around") checkpoints. I'll try to write more on this soon.