An empty tarmac is pictured at the Brussels Airport in Zaventem, during a national strike in a protest over the government’s planned pension reform and budget cuts

An empty tarmac is pictured at the Brussels Airport in Zaventem, during a national strike in a protest over the government’s planned pension reform and budget cuts

An empty tarmac is pictured at the Brussels Airport in Zaventem, during a national strike in a protest over the government’s planned pension reform and budget cuts December 15, 2104. REUTERS/Eric Vidal (BELGIUM – Tags: POLITICS TRANSPORT BUSINESS EMPLOYMENT)