John Matteson reviews two books about World War I: "The World Remade: America in World War I" and "The Vanquished: Why the First World War Failed to End."

Italian media report that a nerve gas was used in yesterday’s attack by the forces of the Assad regime against the rebels in this area.

In March, it was reported that up to 200 civilians in the northern Iraq city of Mosul had been killed by a series of airstrikes.

Pope Francis joined a chorus of humanitarian relief and human rights critics who urged the United States to do more to avoid noncombatant deaths.

Catholic bishops in Congo have abandoned attempts to arrange a government-opposition power-sharing agreement, amid rising violence.

The Guantánamo tribunals create a precedent that endangers us all.