IMHO, I'd trust him as much as Bill Clinton with any security secrets if I were the Israeli government. He was too tight with “Peace Now” for comfort.
http://ziontruth.blogspot.com/2008/11/is-rahm-emanuel-kapo-or-merely-vichyite.html
It looks like Israel will be left by themselves to take out the nuclear Hitler for the world. Everyone will secretly thank them but publicly scorn them, as usual.