Was the US & Britain justified in flattening German& Japanese cities with bombers in WW2?

To me they were as cities were industrial hubs for manufacturing war materials & military personnel. This had a massive strategic effect in the field when it came to Germany or Japan supplying their militaries with arms and fuel. It was very effective and a big factor in ending the war.

Was the US & Britain justified in flattening German& Japanese cities with bombers in WW2?
Was the US & Britain justified in flattening German& Japanese cities with bombers in WW2?
Updates
+1 y
Liberals say we should have dropped leaflets on gender and the lgbtq on the nazis and Japanese instead of bombs.
Was the US & Britain justified in flattening German& Japanese cities with bombers in WW2?
Post Opinion