Jim Forest, who died on Jan. 13, was a lifelong peace activist and the author of numerous books, including biographies of Dorothy Day, Thomas Merton and Daniel Berrigan, S.J.

Vladimir Putin‘s aggression against Ukraine fails just war theory, but the ethicist John Davenport writes that NATO forces are morally justified in responding with proportionate military action.

Thich Nhat Hanh, who died on Jan. 21, had a profound influence on Thomas Merton, who said, “I have far more in common with Nhat Hanh than I have with many Americans, and I do not hesitate to say it.”

Amid a tense and volatile situation in Eastern Europe, Pope Francis today called for prayers worldwide.

The nuclear nonproliferation treaty (NPT) was written for a Cold War standoff between the U.S. and the Soviet Union. It can only be effective now if it includes new nuclear powers like Israel.

In a video message released by the Pope’s Worldwide Prayer Network, Pope Francis offered his prayer intention for the month of January, which he dedicated to people who suffer from religious discrimination and persecution.