Terrorists do not sit still, and nor should we

In the past week, Europe has once again been struck by terror.

In Barcelona and Cambrils, Spain, and in Turku, Finland, attacks have killed and injured citizens from across the continent, and across the world.

Those sad events remind us that, today, no corner of Europe is immune, and no country unaffected.

By whatever means they are pursued, there is nothing noble in these acts of cowardice. There can be no justification for such murder and violence.

Faced with these...