Ken Lei traveled underground to Chin Village, in where he has an underground house for safety.
He lit his torch and began looking around. In this underground house, he had maps of all four nations, and so he took a map of the water tribe with him, and then he looked to the left and seen his most valuable possession, he Dual Wield Swords.
He picked them up and put them on his back, and again took a deep, deep breath.
The deep breath made the flame get blown out, and so he exited the building, never to rethink the war.
Once he emerged from underground, he looked at the map.
He would take his four most skilled soldiers of the army and get water bending outfits and immediately go incognito in the Southern Water Tribe, then wait for their chance to strike at the Tribal Chief.