I'm pretty sure International Law prohibited terrorism, but that's out now I guess, 'cause US seems just to have said it doesn't recognize International Law.
Don't commit the logical fallacy that just because we're speaking against one group of terrorists I therefore defend another.
We're not talking about refugees, but for the record, I don't support or believe in unchecked or illegal immigration, and I never have. If we really were all against it, we would have put those who were advocating for it on trial for treason 50 years ago when it started.
Again, that's because of corrupt Western governments. Easy divorce laws, social security for broken families at the expense of ordinary families, feminism, promotion of birth control, permission for abortion etc. I don't agree with all of these things, but it's not the fault of Muslims that Western populations are in decline.
It's overhyped, and always has been. I would much sooner an Earth where the government of every country was afraid of attacking another country, than the one we have where the greedy seem to prey upon the poor with impunity. Similar to the second amendment, but for countries.