The value of catastrophic events is that they can help people face up to problems that are otherwise impossible to address. Maybe this will be the case with Tuesday’s horrific attacks in Brussels. Europe is facing a security threat that’s unprecedented in its modern history, at a time when its common currency, border security and intelligence-sharing are all under severe ...

The terrorist attacks in Brussels have once again evoked the international resolve to defeat terrorism, defend freedom and human rights not only in Europe but also around the world. Posing a new challenge, perpetrators vented their anger over the arrest of Salah Abdeslam, the most wanted suspect in November’s attacks in Paris. They seem to send a vengeful message that ...

The reaction of financial markets to the terrorist attacks in Brussels on Tuesday was calm and mature, showing that they have learned the lessons of such tragedies, which have become all too common. Nonetheless, markets will find it increasingly difficult to price the longer- term effects, including unusual political developments that could affect the global economy. The markets’ relatively muted ...