"Warmonger psychology" or "If warmongers were smart and educated
in economic theory"  I am no psychologist (I promised myself to
read more on the very interesting cognitive psychology), but I
have a suspicion that warmongers have a desire for war, military
bullying and general boasting of national strength that is not
related to common cost/benefit thinking.  They just like the
idea of national military strength and of using this strength.
It appears to give them satisfaction in itself. This would also
explain why and how they can consider even disastrous conflicts
"successful": They gave them satisfaction. Everything else
appear to be a mere pretence.  I don't think countries should
spend billions or go to war just to satisfy this population
share's desire for it. Maybe a modified Flottenverein model
could be a solution: Whoever wants more military spending than
required for national and collective defence should join the
'club of offensive military sponsors' and pay club fees. But
unlike the Deutscher Flott