Alexey Pushkov said Europe has hushed up links to opposition militants.
Tarik Hassane, 22, and Suhaib Majeed, 21, convicted of planning to kill soldiers and police.
A mother of twins, a law student and a government worker were all killed in the bomb blasts.
Our unity in Europe makes us safer, not weaker, says Paddy Ashdown.
With at least 31 dead, Belgians seem resigned to the reality of terror in Europe.
Dozens of people died in twin bombings in Brussels on Tuesday.
The top lawmaker on the intelligence committee in the House said the explosion was close to U.S. airline counters.
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.
Memphis Depay feels more at home on international duty.
Laachraoui, an accomplice of Paris attack suspect Salah Abdeslam, remains at large.
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.