Death toll may rise above 31 with over 60 people still critical after metro, airport blasts

Lawyer says 26-year-old, linked to Brussels and Paris attacks, wants to ‘explain himself’

For terror groups like Isis, brothers are ideal recruits – and a big challenge for authorities

Turkey claims Belgium ignored warning as police continue to search for suspect

Attacks are a way for Islamic State to re-emphasise its destructive capabilities in Europe, despite recent setbacks in the Middle East

Brahim El Bakraoui struck at airport and Khalid El Bakraoui detonated a bomb on the metro