Europe is a remarkably free and stable place for its citizens in a world still full of discord and division. Of the 25 countries listed as the most peaceful in the world, 15 are from the EU.

However, the chilling effect of recent terrorist attacks has shaken our societies. The increasingly blurred lines between internal and external threats are changing the way people think about personal safety and borders. Paradoxically, this comes at a time when moving around the world for work and leisure is easier and more common than ever before.

The pressures driving migration will also multiply and flows will come from different parts of the world as the effects of population growth, widespread tensions and climate change take hold. The refugee crisis, which saw 1.2 million people coming to Europe in 2015, is of a scale unprecedented since the Second World War. This has led to a contentious debate about solidarity and responsibility among the Member States and fuelled a broader questioning of the future of border management and free movement within Europe.

For the 1.7 million Europeans who commute to another Member State every day, and for the hundreds of millions who travel across Europe for family, tourism or business reasons every year, borders are a thing of the past. Yet, for the first time since walls were torn down a generation ago, the recent crises have led to temporary controls being reintroduced at certain borders within Europe.