An estimated 500,000 to 700,000 unauthorized immigrants lived in Italy in 2017, up from 300,000 to 500,000 in 2014, according to new Pew Research Center estimates based on the latest available data.
Some 244 million people worldwide have left their countries of birth – many seeking improved economic opportunities or fleeing physical danger – but the impact of out-migration has been uneven worldwide.
The number of UN peacekeeping forces around the world has peaked in recent months after falling off in the late 1990s, following a period of trial and error for UN interventions.