Reports are already surfacing of drones launched into Russia that are relying on artificial, not human, intelligence in decisions to evade defensive countermeasures, pick targets and finally conclude a strike.

At one time, the presence of Catholics on both major-party tickets would have been cause for celebration. But now Mr. Vance and Mr. Biden reflect the political divisions among U.S. Catholics.

We need more than cooler rhetoric. We need a politics for the common good.

If Trump is elected, Vance would be the second Catholic vice president in US history—after Joe Biden.

My fellow Americans, I have some bad news: This is who we are.

"Together with my brother bishops, we condemn political violence, and we offer our prayers for President Trump, and those who were killed or injured," said Archbishop Broglio, the president of the U.S. Conference of Catholic Bishops.