Syria wants the Golan returned. Israel wants peace with Syria, but has no intention of returning the Golan, now or ever. This causes Israels schizophrenic behaviour toward Syria. This will only be changed by war, not by peace conferences. Over the years, Israel has learned to manipulate peace talks so that they may exchange their empty promises for material gain. None of this is news to Syria. IF Syria thinks that Bush is willing to expose the Israeli tactics and discuss the return of the Golan in a serious way, Syria will be there, otherwise not.
In three days, Greek coastguard rescues 2,500 migrants (Reuters)
from the article: Syria reportedly to skip summit, as Haniyeh calls meet 'stillborn'