a US pres said war is a necessary evil in achieving peace. but really? can you talk peace while having guns, ammos, nuclear weapons in your hands? NO. And peace is never achieved that way.
kids would usually have no nerve to try fight somebody with a staff, especially an adult. but they might if they, too, have something in their hands that can be used to fight back. if kids, who do not aim for power, would fight back if they have the means... what more of governments, who's lifeblood is power and having all these powerful weapons?
but compared to children who do not have responsibilities upon their shoulders, and thus, could do whatever their impulse tells, governments have subjects to care for and whose lives must be spared from war - peaceful talks will.
if both countries want peace for themselves, they would sit and talk like adults.
however, there are individuals in power who wouldn't simply
give in and would have entirely different principles and goals, so here comes the necessity to use force by means of war, like a parent's need to use force to discipline a child. Sadly, peace is achieved at the expense of many lives through war.