Military action against the Islamic State group?

Q. How does a Christian react to a terrorist group like the Islamic State group (IS)? Praying for their salvation is important, but it may not be sufficient.

Negotiating with them seems impossible, since IS is evidently determined to kill anyone who opposes their ideology. (We have seen this done by beheadings, bombings and other barbaric acts of violence.)

- Father Kenneth Doyle is a columnist for Catholic News Service