Brussels

he British flag is being replaced by the European Union flag following the visit of British Prime Minister David Cameron at the European Union Commission headquarters in Brussels

Thierry Charlier/AFP/Getty Images

The British flag is being replaced by the European Union flag following the visit of British Prime Minister David Cameron at the European Union Commission headquarters in Brussels, Belgium

European Commission President Jean-Claude Juncker kisses European Economic and Financial Affairs Commissioner Pierre Moscoviciduring a meeting of the EU's executive body in Brussels, Belgium, June 27, 2016.    REUTERS/Francois Lenoir

Francois Lenoir/Reuters

European Commission President Jean-Claude Juncker kisses European Economic and Financial Affairs Commissioner Pierre Moscoviciduring a meeting of the EU’s executive body in Brussels, Belgium

Special police forces stand guard outsid...Special police forces stand guard outside the Council Chamber of Brussels on March 24, 2016 during investigations into the Paris and Brussels terror attacks. More than 30 people have been identified as being involved in a network behind the Paris attacks on November 13, with links now established to this week's bombings in Brussels. AFP PHOTO / KENZO TRIBOUILLARDKENZO TRIBOUILLARD/AFP/Getty Images

Kenzo Tribouillard/AFP

Special police forces stand guard outside the Council Chamber of Brussels during investigations into the Paris and Brussels terror attacks

In this photo provided by Georgian Public Broadcaster and photographed by Ketevan Kardava two women wounded in Brussels Airport in Brussels, Belgium, after explosions were heard Tuesday, March 22, 2016. A developing situation left at least one person and possibly more dead in explosions that ripped through the departure hall at Brussels airport Tuesday, police said. All flights were canceled, arriving planes were being diverted and Belgium's terror alert level was raised to maximum, officials said. (Ketevan Kardava/ Georgian Public Broadcaster via AP)

Ketevan Kardava/AP

Two wounded women are seen in Brussels Airport, Brussels, Belgium, after explosions were heard

A police officer runs over a rooftop during a police anti-terrorist operation on the site of a shooting in the rue du Dries in Forest-Vorst, Brussels, Belgium

Laurent Dubrule/epa

A police officer runs over a rooftop during a police anti-terrorist operation at the site of a shooting in the rue du Dries in Forest-Vorst, Brussels, Belgium

Yves Herman/Reuters

Kurdish people display a picture of Turkish President Tayyip Erdogan during a protest outside an EU-Turkey summit in Brussels

German Chancellor Angela Merkel, left, speaks with European Council President Donald Tusk, right, during a meeting on the sidelines of an EU summit in Brussels on Monday, March 7, 2016. European Union leaders are holding a summit in Brussels on Monday with Turkey to discuss the current migration crisis.

John Thys/Pool/AP

German Chancellor Angela Merkel, left, reacts as she speaks with European Council President Donald Tusk, right, during a meeting on the sidelines of an EU summit in Brussels on Monday 

Steel workers protest

© Emmanuel Dunande/AFP/Getty

Steel workers protest to demand urgent action against cheap Chinese imports, in front of the European Commission in Brussels on Monday.

A Belgium army soldier walks through the Galeries Royal Saint-Hubert, or the Royal Saint-Hubert Galleries in Brussels, Belgium, Thursday, Nov. 26, 2015. Brussels is keeping its terror alert on highest level.

Michael Probst/AP

A Belgium army soldier walks through the Galeries Royal Saint-Hubert, or the Royal Saint-Hubert Galleries in Brussels, Belgium, Thursday

An armed soldier stand guards as pupils

Emmanuel Dunand/AFP/Getty Images

An armed soldier stand guards as pupils go to school at the French lycee in Brussels on Wednesday.

Soldiers patrol in the streets, in Brussels, on Tuesday as the Belgian capital remains on the highest possible alert level. Brussels began a fourth consecutive day in lockdown under a maximum terror alert after Belgian police staged a series of raids but failed to find a key Paris attacks suspect

Emmanuel Dunand/AFP

Soldiers patrol in the streets, in Brussels, on Tuesday as the Belgian capital remains on the highest possible alert level. Brussels began a fourth consecutive day in lockdown under a maximum terror alert

A Police officer and soldiers stand guard  in the 'Rue des Bouchers' street, famous for it's restaurants, following the terror alert level being elevated to 4/4, in Brussels, Belgium. Belgium raised the alert status at Level 4/4 as 'serious and imminent' threat of an attack, the main effect are closing of all Metro Line in Brussels, all soccer match of league one and two cancelled countrywide. The Belgian government said it had concrete evidence of a planned terrorist attack that would have employed weapons and explosives

Stephanie Lecocq/EPA

A Police officer and soldiers stand guard in the ‘Rue des Bouchers’ street, famous for it’s restaurants, following the terror alert level being elevated to 4/4, in Brussels, Belgium

A young child waits in line at a migrant reception center in Brussels on Tuesday, Sept. 1, 2015. Hundreds of migrants are arriving every day in Belgium, some making perilous journeys through Europe

Virginia Mayo/AP

A young child waits in line at a migrant reception centre in Brussels on Tuesday. Hundreds of migrants are arriving every day in Belgium, some making perilous journeys through Europe

Greece's Prime Minister Alexis Tsipras (...Greece's Prime Minister Alexis Tsipras (L) is welcomed with a friendly tap by European Commission President Jean-Claude Juncker ahead of an emergency leader's summit on Greece at the European Commission in Brussels, on February 22, 2015. AFP PHOTO/Emmanuel DunandEMMANUEL DUNAND/AFP/Getty Images

Emmanuel Dunand/AFP/Getty

Greece‘s Prime Minister Alexis Tsipras is welcomed with a friendly tap by European Commission President Jean-Claude Juncker ahead of an emergency leader’s summit on Greece at the European Commission in Brussels 

Bolivian President Evo Morales takes part in a football match with the Bolivian Roots FC football club, a team made of Bolivian expatriates, on the eve of a two-day EU-CELAC (Latin America/Caribbean) summit in Brussels, on June 9, 2015

Emmanuel Dunand/AFP

Bolivian President Evo Morales takes part in a football match with the Bolivian Roots FC football club, a team made of Bolivian expatriates, on the eve of a two-day EU-CELAC (Latin America/Caribbean) summit in Brussels, on Tuesday

The greenhouses are seen on the grounds of the Belgian royal family residence of Laeken in Brussels April 17, 2015. The royal family opens its interlocking greenhouses with their wide array of flowers to the public every year, for a duration of three weeks.

Yves Herman/Reuters

The greenhouses are seen on the grounds of the Belgian royal family residence of Laeken in Brussels on Friday. The royal family opens its interlocking greenhouses with their wide array of flowers to the public every year, for a duration of three weeks

Protesters gather in central Brussels during a trade unions meeting...Protesters gather in central Brussels during a trade unions meeting March 11, 2015. Several thousand public and private sector workers, employees and trade union members demonstrated over austerity measures undertaken by the Belgian government. REUTERS/Yves Herman (BELGIUM - Tags: POLITICS BUSINESS)

Yves Herman/Reuters

Protesters gather in central Brussels during a trade unions meeting on Wednesday. Several thousand public and private sector workers, employees and trade union members demonstrated over austerity measures undertaken by the Belgian government. 

An armed policeman stands guard at the entrance of Belgium's federal prosecutor office in Brussels, January 16, 2015.  Belgian police arrested 13 people during a dozen raids overnight, smashing plot to kill police officers "in public roads and in police stations", prosecutors said.

Emmanuel Dunand/AFP

An armed policeman stands guard at the entrance of Belgium’s federal prosecutor office in Brussels on Friday. Belgian police arrested 13 people during a dozen raids overnight

Union members clash with police in Brussels during a national general strike which was called for by the different unions to protest against austerity measures.

Thierry Roge/AFP/Getty Images

Union members clash with police in Brussels during a national strike, which was called to protest against austerity measures.

People walk the stairs of the European Parliament building, in Brussels.

Yves Logghe/AP

People walk the stairs of the European Parliament building, in Brussels.