Egyptian police must act more quickly against Muslim rioters, a Catholic bishop said after 12 people were killed in Cairo.

Thousands marched through Mexico City on May 8 calling for new public policies in the drug war and the end of violence.

Hundreds of people are missing, according to sources inside Vietnam; many escaped into the bush fleeing from attack helicopters.

Nations and individuals have a duty to enact policies that mitigate global warming, said a Vatican-sponsored working group.

The fallout following the forced retirement of Australian Bishop William Morris has grown more caustic in recent days.

Reports continue to emerge of hundreds of migrants and refugees missing and presumed drowned in the waters off Libya.