Iran War: Threats to attack civilian targets are raising concerns with legal experts

Attacking civilian infrastructure is a war crime under international law. So when President Trump threatened to attack power plants and potentially all desalination plants in Iran earlier this week, it raised concerns among some legal experts. Kuwaiti officials also accused Iran of destroying one of its desalination plants earlier this week. If a war crime were to be committed during the conflict with Iran, what would accountability look like? Would there be any at all?