We are only responsible for our own side.
Your remark about hiding away was low.
The Christian missionaries that I know (the ones who go to do and not to preach) give medical aid, build homes, install water purification and delivery systems, and help set up agricultural services with the people in their mission area, and teach people to read and write in the official language of their nation. They are unarmed but are sometimes shot at anyway.
They are not cowards, and they do their share to bring peace to the world far more than sabre-rattling Americans who stay at home and talk about killing the ragheads.