International humanitarian organizations are warning that Iraqis, mainly Sunni Muslims, left in Mosul are "now in grave danger."

Politicians, their staffs and volunteers should reflect our best aspirations as citizens," he said.

The release of the 21 girls was part of a deal brokered by the International Committee of the Red Cross and the Swiss and Nigerian governments.

Deaths and injuries spike for children under 5, with 3-year-olds the most common shooters and victims.

Catholic charities around the world are advocating on behalf of children victims in Syria.

Hint: He's a Catholic and a Socialist.