#1. Place your military units FAR AWAY from any civilian areas.

#2. Wait for us to hit you with long range missiles and bombs.

#3. Surrender.

Personally, I'm recommending arena combat. One on one. Knife fighting.

Then we'll see who's "brave" and who's a "coward".

No civilian injuries.

No infrastructure damage.

Anyone who wants to surrender rather than fight is taken away by the opposing nation.