This area can be confusing and whilst I also have reservations, here in the world we live in today it is a necessary evil.
We can add to this category the vast amount of foreign aid this country contributes.
One could liken the fight against terrorism and all horrific outcomes that go with it to, as an example, the Ebola outbreak in Africa.
At present, the outbreak is overseas and not affecting us. However, unless we contribute and help towards its elimination it could soon spread to our fair country.