Ahem, haven't you been listening to Bibi? He is willing to sit in a tent to restart "negotiations", and once started he is willing to sit there For As Long As It Takes To Get The Job Done. Get it? If Abbas walks into that tent he WILL NOT be allowed to walk out again, certainly not so he can take Israel to the ICC. Your advice would simply see him walking into a trap, and he can see that even if you can't.
Ofir Akunis officially replaces Danny Danon as minister of science, technology, and space (Haaretz)
from the article: Under pressure from Kerry, Abbas softens preconditions for peace talks