An official in the Norwegian intelligence service PST admitted that the agency has underestimated the number of people who have traveled to Syria and Iraq to fight for extremist groups since the autumn of 2012; the number is now said to be as many as 140. Authorities believe that at least 20 of those foreign fighters have returned to Norway and that 12 others have died. In a march led by Muslim and Christian leaders, about 5,000 people demonstrated in Oslo against the Islamic State’s terrorism.
