EU states should "be ashamed" of themselves if they do not cooperate.
Yisrael Katz says Belgians cannot "continue to eat chocolate" and fight extremism.
Thibaut Courtois believes change at the club was inevitable.
The friendly was scheduled for the King Baudouin Stadium in Brussels.
Extremists aim to divide, and we must not bow to them, writes Chatham House's Benoit Gomis.
"It's war," the cartoonist declares with the hashtag #Bruxelles.
Laachraoui, an accomplice of Paris attack suspect Salah Abdeslam, remains at large.
Giancarlo Abete says drastic measures may have to be taken to protect supporters.
Unemployment and alienation have left many bitter and ripe for recruitment, experts say.
Siblings Khalid and Ibrahim El-Bakraoui both had criminal records, but no known extremist connections.
The suspect reportedly was seen in the airport terminal wearing a light-colored jacket and a hat.
The old-line extremist networks have no connection to today's "jihadist cool" aficionados.
Brussels citizens follow Parisiens and offer their homes to people stuck after the attacks.
The Belgian government has "failed" in stopping the jihadi threat, say experts.
Musicians, actors and more react to the senseless attacks in the Belgian capital.
Belgian federal prosecutor releases images of suspected bombers inside Zaventem airport.
Twin explosions in Brussels will test how the contenders would protect the U.S. as president.
England's football match against Germany in Berlin will go on as planned.
Sympathizers of the militant group hail the attack as a reaction to Belgium's "war" on religion.
Djordje Djokovic was coming in to land when explosions hit Zaventem airport.
Gatwick, Paris and Frankfurt airports increase security levels after two explosions hit Brussels check-in area.
No links to extremism yet established but ISIS suspects remain at large in Belgian capital.
Shots were fired and Arabic was shouted before the blasts at Zaventem airport, according to reports.