Aside from government organizations, religious organizations of various denominations, particularly Christian and Catholic organizations, have played a central role in aiding communities that have been affected by political and military conflict, terrorism, natural disasters, and many others. The reason for it, aside from the usual attempt at evangelization, is that the very core of the Christian faith is to support those who are most vulnerable in society.
For example, it is enough to look at regions of the world that have been devastated by war and famine, to be able to see this issue. When you look at Africa, there is no clearer picture of how religious organizations have supported these communities through diverse activities, like feeding them, teaching them, or providing healthcare services for free. Countries in the Middle East, one of the most violent regions in the world, right now, also receive enormous percentages of aid from religious organizations, through money, but most of all, through human resources; people who go to the devastated countries to provide healthcare services and others.
The most important issue here is that, unlike governmental agencies, and international agencies, religious organizations have affected vulnerable communities not just for a short period of time - just during the peak of the problem- as has been cases like Haiti, after the earthquakes, or Venezuela in their internal conflict, but they work long-term and their effect are also long-term.