Le Creuset is dropping some truth bombs.
Kira (and Cagalli’s) mom and dad were lab techs. His dad was attempting to create the ultimate Coordinator. But he needed funding. Mu’s father provided the funding but in exchange he wanted a clone made of him. That clone grew up to be Le Creuset.
Outside the colony, the battle is still going.
As soon as Le Creuset gets out of the colony lab and back to his ship, he sends Flay in a life pod with some information he says will end the war.