Same reason we didn't wait for the Imperial Japanese Army to land in California before we began fighting them.
Or the Wehrmacht to land in New Jersey before fighting them.
Wait- you mean we're actually fighting someone over there? I mean, for the last 16 years we've thrown a ton of blood and treasure at that crap bowl, and it's still a problem. And as far as President Trump's approach goes, so far we've dropped a big-ass bomb on some caves and thrown some really expensive cruise missiles at them. But as long as those goat-humpers can pull off an attack like this, our troops ain't being allowed to break nearly enough of their stuff.
If we are going to continue sending our kids over there, we need to let them toss out the "Let's win some hearts and minds" crap. Instead, let's tear their sh*t up and make a million of their mothers weep and cry like too many American mothers have been doing.
You don’t really believe that do you? If that was our mission it should not have taken 13 years to do so. We won a World War in less than 3.