‘’A country’’ isn’t Christian, Muslim, Hindu, or Buddhist. ‘’An Individual’’ can be.
Governments of a country in which the majority of citizens are said to be Buddhist, is not ‘’a Buddhist government’’. It is simply the government of that country.
The Eightfold Path culminating in Nibbana is not traversed by ‘’a country’’.
It is absolutely clear that the Buddha taught that dhamma-farers should not kill any living being. There is the only thing which he approved of killing.http://www.accesstoinsight.org/tipitaka ... .than.html
In all wars, there have been Conscientious Objectors who stand firm in the face of strong public pressure, and who often work as medics or in some non-combatant role.
Not being enlightened yet, all of us will have ideas of how we would act in a threatening situation. In actual fact, driven by kilesas of delusion, fear or hatred, we may act differently to our ideal. But what the Buddha taught is clear.
We inherit the vipaka of intentional actions, no matter how we justify them. There is no wiggle room.