The problem with making a country an enemy is that it severely narrows the options you have to deal with them. In the case of an "implacable" foe, such as decalring war on all muslims, you narrow it even further. You have to kill them all.
Starting a general war in the entire mideast will end up requiring just that.
If you are "friends" with another state you have many oportunities to influence them and thier actions. Whether it is by trade, lack of trade, technological "toys", cultural exchange or whatever you can make multiple "attacks" to influence the country and eventuall save many lives. Once you drop the options to kill them all, you better be ready to pay the price.
Not a dove mind you, but a realist in the fact that the globe is not a series of totally independant groups of people. Think about it.