To save US armed forces lives via conventional warfare. It worked because Japan did not have Nukes to retaliate in kind.
The Doomesday clock is today at the closest to midnight and moralising simply won't reverse that. A ceasefire and a negotiated settlement of this war will.
So, IMO its futile to do the ostrich gig and stick your head in the sand when the Doomesday clock is saying otherwise and that a Nuke war is at its highest probability in 75 years (incl the Cuban crisis)
We have nothing to gain from a Nuke war but instead everything to loose so the same/sensible position to take from an Aus perspective (self interest) is -Ceasefire -Negotiated settlement.