Stockholm - Swedish Prime Minister Stefan Lofven described the blasts at Brussels airport and one of the city's metro stations on Tuesday as an attack against European democracy.
"It is an attack against democratic Europe. We will never accept that terrorists attack our open societies," he said in a statement.
His Danish counterpart Lars Lokke Rasmussen also denounced the blasts in Brussels, the headquarters of the European Union and Nato, as a "despicable attack".
"My thoughts are with the victims and their families. We stand with Belgium," Rasmussen said on Twitter.
At least 13 people were killed in the explosions at the airport, Belgian media reported, while at least 15 were injured in the metro blast.