Free movement and border policies in Africa and Europe
Map of Border Controls Inside Europe's Schengen Area: August 2016 - Political Geography Now
EU internal borders may be reimposed for two years
Why the Schengen agreement might be under threat | The Economist
Schengen: Controversial EU free movement deal explained - BBC News
Schengen Area - Wikipedia
Schengen Area - List of the 26 Schengen Countries
Europe Rethinks the Schengen Agreement
The Future of Schengen – European Council on Foreign Relations
Border checks in EU challenge Schengen Agreement – DW – 11/12/2019
The Union's external borders: a European debate revisited
Schengen at risk, border controls in six countries - InfoMigrants
Is this the end of Schengen? | World Economic Forum
Schengen Border Controls in the Time of Coronavirus (April 14, 2020) - Political Geography Now
Ever Closed Borders - Das Progressive Zentrum
What is Schengen? - Australian Institute of International Affairs - Australian Institute of International Affairs
Europe had a dream of a land without borders. Now that dream may be turning to dust. - The Washington Post
EXPLAINED: Which Schengen area countries have border controls in place and why? - The Local
The slow death of Schengen – EURACTIV.com
Strengthening the EU's external borders - Consilium
Europe's Schengen area: border free, with exceptions – European Data News Hub
