Just war principles do not require Western nations to practice pacifism or ignore Russian aggression in Ukraine. But they may still guide nations to a nonviolent resolution, and Pope Francis can help.

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.

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

A profoundly Russian author, Olga Sedakova offers insights into Christian living for a worldwide audience.

A prominent Russian Catholic urged his nation's bishops to condemn the mass arrest and beating of protesters, but the Moscow archdiocesan chancellor said the church could not comment on “political matters.”

Church officials' concerns stem from draft amendments to Russia's 1997 Law on Freedom of Conscience and Religious Associations, which would bar "clergy who receive religious education abroad" from ministering unless they obtain "recertification within a Russian religious organization" and "receive additional professional education."