Violence is always justified but peace is called impossible.

it's barbaric
but if someone want to have one with you - you don't have much choice except to capitulate.
given what happened to those that surrendered to Hitler...not a fan of that either.

That being said, the face of warfare is changing.

No longer hoard of people with pointed sticks and clubs.
and adding computers as a weapon nowadays.

Attacking any country for it's assets, politics, religion. or for any reason:

"Let every nation know, whether it whishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe to assure the survival and the success of liberty" JFK

I think some behavior is more intimidating than others. Breaking into a building is not nearly as horrific as burning down a building and putting lives at risk. But who cares. We can't stop people from doing what they do.

Si vis pacem, para bellum