Now the Muslims will have the battle lines drawn back to them. Islam declared war on non-Muslims over 10 years ago, so we have been very slow to react.
If Islam knows that now they have to fight all of Christianity, all the Hindus, all the Humanists, and all the Atheists and other non-believers of Mohammed--they probably will not change their plans to kill us all, but they will know that the US is not going to sit back like Germany did and watch the Nazis destroy non-Nazi groups one-by-one.
Sayonarra, Islam.
A slight correction. Islam declared war on non-moslems about 1000 years ago.
Um, no, Muslims declared war on non-Muslims a little over 1300 years ago. We've just been living through a 'hudna' as they call it, since oh, the last seige of Vienna, or maybe the Armenian genocide, depending on how you want to account things. When they're too weak to fight non-Muslims, they have an 'operational pause' presented to their opponents as 'peace' or at least a 'cease-fire'.
The problem is that our enemy is neither just active terrorists, nor all Muslims, but rather all Muslims who take seriously the dominant school of Koranic intepretation which holds that the violence-advocating suras have precedence over the peace-advocating suras.
For diplomatic reasons (the utility of getting those Muslims who adhere to different schools of intepretation, or who don't really care much, to be either neutral or actually allied with us) it's best to talk about being at war with 'the terrorists' 'extremists' etc. As a practical strategic matter planning ought to proceed on the assumption that all Muslims are enemies (since only a tiny minority follow another school of intepreation, and the ones 'who don't care much', while not enemies now are potential enemies.)