It is rarely reported in the mainstream press (even in Israel), but Egypt is not fanatical about its peace treaty with Israel:
Egypt has worked to thwart Israel diplomatically in various international forums for years, so Egyptian Foreign Minister Gheit's recent threat to turn up the diplomatic heat on Israel is nothing new, Israeli officials said Tuesday. Egypt's foreign minister warned that Cairo would "retaliate" diplomatically against Israel if its complaints against Egyptian inaction on arms smuggling into Gaza hurt U.S.-Egyptian ties. According to one official, Egypt originally led the bloc of countries at the UN General Assembly last month that tried to prevent Israel's resolution on the transfer of agricultural technologies from being accepted.