I don't think that we could fight terrorism, and I don't think that we could get Islam to change, in fact it is probably at the best it has ever been already. Islam is a religion that is carged into stone, it's not something we could really change, Islam instructs what it does through the Koran and this Koran is not something that could be re-written. it is not like how the Catholoics are dealing wht Christianity, with catholoissm, much of the rule does not have to do with what the bible says directly, but mostly has to do with the pope and his SN '7-deadly' sins, it has to do with what the church thinks god wants, and not always directly about what the bible instructs itself, same is not true about Islam, Islam is based on the Koran and solely the Koran, Sharia is based on the Koran(primarily) and hadith(where the quran relates to it). And thus we can't change our understanding of what god meant like the Catholics done with their previous '7-deadly sins' and murderous instructive forms of torcher which had nothing to do with the bible it self, especially not as Sharia is embedded into the Koran and Islam.