They wanted to lose...
They were already stretched to the limits of resources and the only honorable way out was to attack a country that would come in and rebuild their country and modernize as they went.
seems like the best way to go... send all males who can fight to die ...thus thinning an already overburdened population... but you have to make it look like your doing it for prosperity in the eyes of your people other wise you will lose your face...