Blowing up dams is a pretty standard thing whatever side is on defense to do. Ukraine did it earlier in this war, Russia did it (much smaller dam) after Kakhov

Blowing up dams is a pretty standard thing whatever side is on defense to do. Ukraine did it earlier in this war, Russia did it (much smaller dam) after Kakhovka, the Netherlands has done it, Belgium has done it. Blowing up nuclear power plants is way less common.