We are involved whether we like it or not - we can either engage or just try to defend for ever and a day....
We do not have to engage them over there.
We will have to defend our own country.
However, mostly they are busy killing other Muslims and causing mayhem in Europe ... and occasionally coming over to the USA to do harm. However we have the means to stop them coming over here for the most part. This is where we should put our efforts.
It won’t be easy because Canada is intent on going the Europe route and letting in many unvetted ‘refugees’. So we’ll need more vigilance on our northern border.
But we need to stay out of the MENA. Those are their problems and have been for CENTURIES.