BELGIUM-ATTACKS-ALERT

A person walks near a closed entrance of the Schuman Station Railways in Brussels on November 21, 2015. All metro train stations in Brussels will be closed today, the city's public transport network said after Belgium raised the capital's terror alert to the highest level, warning of an "imminent threat". As Europe tightens security a week on from the jihadist attacks in Paris that left 130 people dead, Belgium's OCAM national crisis centre raised its alert level to 4 early on November 21, "signifying a very serious threat for the Brussels region". AFP PHOTO/JOHN THYS / AFP / JOHN THYS (Photo credit should read JOHN THYS/AFP via Getty Images)