Subsea cables. Ukrainian power stations. Russian oil refineries. Even airports, water-desalination plants and Amazon data centers.

They've all become targets in wartime, notes the Wall Street Journal, and around the world now arguments "are already brewing between companies and governments over new regulations and potential costs."

In Germany, powerful associations representing private companies and municipal utilities have pushed back against new standards for physical protection, warning they could spell financial ruin. New Zealand's government has faced resistance from industry groups over a proposal to fine critical-infrastructure companies and their directors for cybersecurity breach...