S. Glazer, European migration crisis, in: CQ Researcher, 25, p. 649-672 ([Internet, 2017-11-08](http://www.firststreet.org.uk/cqresearcher/document.php?id=cqresrre2015073100))
European governments have vacillated between viewing the refugee surge as a humanitarian disaster worthy of sympathy or an invasion that must be stopped.