Robert Hutton Dara Doyle Ian Wishart Bloomberg

The search for a key suspect in the Paris terror attacks kept the Belgian capital in an unprecedented lockdown that brought business to a standstill as European leaders vowed to tackle the crisis at its roots in Syria.

The search for a key suspect in the Paris terror attacks kept the Belgian capital in an unprecedented lockdown that brought business to a standstill as European leaders vowed to tackle the crisis at its roots in Syria.