70 years later, why are there 4 million so-called ‘Palestinian’ Muslim refugees?

It’s been nearly seven decades since the 1948 Arab-Israeli war, and yet there are still an estimated 4 million Palestinian refugees, many of them living in Arab nations, yet not allowed to become citizens of those countries. With so many nearby Arab allies of the Palestinians, how did this happen? Dumisani Washington, Diversity Outreach Coordinator for Christians United for Israel, explains: