To help connect the dots, I repost the following three linked articles indicating that the current climate change (and terrorism) related refuges from the Middle East could soon (by/before 2020) be added to by tens of millions of refuges from both sub-Saharan Africa and the North Indian Subcontinent (also due to extreme drought conditions):
1) Per the linked BBC article, the UN estimates that by 2020 over 50 million sub-Saharan African will move to North Africa and Europe due to desertification:
http://www.bbc.com/news/world-africa-34790661Extract: According to the UN, over 50 million people could move from the desertified areas of sub-Saharan Africa towards North Africa and Europe by 2020."
2) Per the linked The Guardian article, the current Super El Nino is already accelerating sub-Saharan African drought conditions above the average projections made by the UN:
http://www.theguardian.com/global-development/2015/nov/16/el-nino-food-shortages-floods-disease-and-droughts-set-to-put-millions-at-risk?CMP=twt_a-environment_b-gdneco?CMP=twt_a-environment_b-gdnecoExtract: "This year, a strong El Niño has been building since March and its effects are already being seen in Ethiopia, Somalia, Kenya, Malawi, Indonesia and across Central America, according to the World Meteorological Organisation. The phenomenon is also being held responsible for uncontrolled fires in forests in Indonesia and in the Amazon rainforest."
3) Per the linked NOAA article, and associated image, a moderate El Nino sometime before 2020 could add many more (millions more?) climate change refuges to the 50 million sub-Saharan refuges projected by the UN to moving into North Africa and Europe by 2020
https://www.climate.gov/news-features/blogs/enso/enso-and-indian-monsoon%E2%80%A6-not-straightforward-you%E2%80%99d-thinkCaption for the second attached image: "Comparison of the Oceanic Niño Index to Indian monsoon rainfall from 1950-2012. La Niña years are blue, neutral years are gray, and El Niño years are red. El Niño years tend to be drier than average, but the strongest El Niño of the century (1997-98) produced a monsoon season with above-average rainfall. Graph adapted from Kumar et al. 2006."