Turkey has shown you the way. Nations that do not take action against Israel will be seen as approving and supportive of Israels behavior. Just as those nations don't want to be the first to take action, they also don't want to be last.
Ex-FM Lieberman: Firebomb attack in Jerusalem a reminder that norm is Arab terror against Jews (Haar
from the article: Turkey president cancels talks with Peres, but plans to meet Ahmadinejad